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Finding the Fourth Proportional to 125,350.48, 187,965.24 and 72,773.20

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Solution

The fourth proportional to 125,350.48, 187,965.24 and 72,773.20 is: 109,124.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,350.48 : 187,965.24 = 72,773.20 : x
  2. Step 2: Convert to fraction form
    125,350.48/187,965.24 = 72,773.20/x
  3. Step 3: Cross multiply
    125,350.48x = 187,965.24 × 72,773.20
  4. Step 4: Simplify right side
    125,350.48x = 13,678,832,003.57
  5. Step 5: Solve for x
    x = 13,678,832,003.57/125,350.48
  6. Step 6: Final answer
    x = 109,124.69

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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.