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The ratio of third proportional to 16 and 20 and the mean proportional of 16 and 4 is: 1. 25:8 2. 17:13 3. 17:11

The ratio of third proportional to 16 and 20 and the mean proportional of 16 and 4 is: 1. 25:8 2. 17:13 3. 17:11 4. 8: 25 11:8 5.

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