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Finding the Fourth Proportional to 1,712.16, 2,565.96 and 932.16

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Solution

The fourth proportional to 1,712.16, 2,565.96 and 932.16 is: 1,397.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,712.16 : 2,565.96 = 932.16 : x
  2. Step 2: Convert to fraction form
    1,712.16/2,565.96 = 932.16/x
  3. Step 3: Cross multiply
    1,712.16x = 2,565.96 × 932.16
  4. Step 4: Simplify right side
    1,712.16x = 2,391,885.27
  5. Step 5: Solve for x
    x = 2,391,885.27/1,712.16
  6. Step 6: Final answer
    x = 1,397.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.