which number should be added from from 12,16 and 21 so that resultant number are in continued proportion
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Answer: Let the number x be subtracted from 12, 16 and 21 so that resultant numbers are in continued proportion. ∴ (12 − x), (16 − x), (21 − x) are in continued proportion. Thus, the number −4 must be subtracted from 12, 16 and 21 so that resultant numbers are in continued proportion.
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