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The fourth proportional to 5, 8, 15 is:
  • a)
    18
  • b)
    24
  • c)
    19
  • d)
    20
Correct answer is option 'B'. Can you explain this answer?
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The fourth proportional to 5, 8, 15 is:a)18b)24c)19d)20Correct answer ...
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The fourth proportional to 5, 8, 15 is:a)18b)24c)19d)20Correct answer ...
Solution:

To find the fourth proportional to 5, 8, 15, we need to use the proportionality rule as follows:

5 : 8 :: 15 : x

where x is the fourth proportional.

Using cross multiplication, we get:

5x = 8 × 15

5x = 120

x = 120/5

x = 24

Therefore, the fourth proportional to 5, 8, 15 is 24.

Answer: Option B.
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The fourth proportional to 5, 8, 15 is:a)18b)24c)19d)20Correct answer is option 'B'. Can you explain this answer?
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