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Finding the Fourth Proportional to 72,494.92, 108,773.70 and 39,238.42

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Solution

The fourth proportional to 72,494.92, 108,773.70 and 39,238.42 is: 58,874.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,494.92 : 108,773.70 = 39,238.42 : x
  2. Step 2: Convert to fraction form
    72,494.92/108,773.70 = 39,238.42/x
  3. Step 3: Cross multiply
    72,494.92x = 108,773.70 × 39,238.42
  4. Step 4: Simplify right side
    72,494.92x = 4,268,108,125.55
  5. Step 5: Solve for x
    x = 4,268,108,125.55/72,494.92
  6. Step 6: Final answer
    x = 58,874.58

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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.