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Finding the Fourth Proportional to 60,757.20, 91,103.40 and 25,657.20

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Solution

The fourth proportional to 60,757.20, 91,103.40 and 25,657.20 is: 38,472.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,757.20 : 91,103.40 = 25,657.20 : x
  2. Step 2: Convert to fraction form
    60,757.20/91,103.40 = 25,657.20/x
  3. Step 3: Cross multiply
    60,757.20x = 91,103.40 × 25,657.20
  4. Step 4: Simplify right side
    60,757.20x = 2,337,458,154.48
  5. Step 5: Solve for x
    x = 2,337,458,154.48/60,757.20
  6. Step 6: Final answer
    x = 38,472.12

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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.