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Given 3 scores of 74, 70, 71, what should be score number 4 in order to attain an average score of 72?

Setup Average Equation:

Average  =  Sum of our 3 numbers + unknown score of x
  Total Numbers

72  =  74 + 70 + 71 + x
  4

Cross Multiply

74 + 70 + 71 + x = 72 x 4
x + 215 = 288

Subtract 215 from both sides of the equation to isolate x:

x + 215 - 215 = 288 - 215

x = 73


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What is the Answer?
x = 73
How does the Missing Average Calculator work?
Free Missing Average Calculator - Given a set of scores and an average, this calculates the next score necessary to attain that average
This calculator has 2 inputs.
What 1 formula is used for the Missing Average Calculator?
Average = (your Sum of all numbers + unknown score of x)/Total Numbers
What 3 concepts are covered in the Missing Average Calculator?
average
A number expressing the central value of a set
Sum of Values/n
missing average
A score or rank required to reach a certain average
number
an arithmetical value, expressed by a word, symbol, or figure, representing a particular quantity and used in counting and making calculations and for showing order in a series or for identification. A quantity or amount.
Example calculations for the Missing Average Calculator
Missing Average Calculator Video

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