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Finding the Fourth Proportional to 56,691.60, 85,049.70 and 17,247.69

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Solution

The fourth proportional to 56,691.60, 85,049.70 and 17,247.69 is: 25,875.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,691.60 : 85,049.70 = 17,247.69 : x
  2. Step 2: Convert to fraction form
    56,691.60/85,049.70 = 17,247.69/x
  3. Step 3: Cross multiply
    56,691.60x = 85,049.70 × 17,247.69
  4. Step 4: Simplify right side
    56,691.60x = 1,466,910,860.19
  5. Step 5: Solve for x
    x = 1,466,910,860.19/56,691.60
  6. Step 6: Final answer
    x = 25,875.28

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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.