Answer
$60$
Work Step by Step
By setting the product of the means and the product of the extremes equal, we have
$$
13\cdot x=5\cdot 156\Longrightarrow x=\frac{5\cdot 156}{13}=60
.$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 8 - Cumulative Review - Page 319: 18
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