Question
The fourth proportional to 5, 8, 15 is:
Answer: Option B
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Let the fourth proportional to 5, 8, 15 be x.
Then, 5 : 8 : 15 : x
\(\Rightarrow\) 5x = (8 x 15)
X = \(\frac{(8\times15)}{5}\) = 24
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