When you ask "What number is halfway between 74 and 171?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=74 and Y=171.
To find the number halfway between 74 and 171, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 74 and 171 into our formula, we get:
(74 + 171)/2 = 122.5
Thus, the number halfway between 74 and 171 is 122.5.
To check that our answer is correct, we subtract 74 from 122.5 and subtract 122.5 from 171 and compare the two numbers:
122.5 - 74 = 48.5
171 - 122.5 = 48.5
As you can see, the halfway number is 48.5 higher than 74 and 48.5 lower than 171. Therefore, our halfway between answer of 122.5 above is correct.
Halfway Between
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Halfway Between 74 and 172
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