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Finding the Fourth Proportional to 125,167.92, 187,793.76 and 40,931.96

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Solution

The fourth proportional to 125,167.92, 187,793.76 and 40,931.96 is: 61,411.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,167.92 : 187,793.76 = 40,931.96 : x
  2. Step 2: Convert to fraction form
    125,167.92/187,793.76 = 40,931.96/x
  3. Step 3: Cross multiply
    125,167.92x = 187,793.76 × 40,931.96
  4. Step 4: Simplify right side
    125,167.92x = 7,686,766,672.57
  5. Step 5: Solve for x
    x = 7,686,766,672.57/125,167.92
  6. Step 6: Final answer
    x = 61,411.64

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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.