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Question
The fourth proportional to 0.12, 0.21 and 8 is ______.
Options
8.9
14
17
56
MCQ
Fill in the Blanks
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Solution
The fourth proportional to 0.12, 0.21 and 8 is 14.
Explanation:
Let the fourth proportional be d. Then 0.12 : 0.21 = 8 : d, giving `d = 8 xx 0.21/0.12 = 14`.
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