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Finding the Fourth Proportional to 52,370.87, 78,493.86 and 36,489.89

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Solution

The fourth proportional to 52,370.87, 78,493.86 and 36,489.89 is: 54,691.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,370.87 : 78,493.86 = 36,489.89 : x
  2. Step 2: Convert to fraction form
    52,370.87/78,493.86 = 36,489.89/x
  3. Step 3: Cross multiply
    52,370.87x = 78,493.86 × 36,489.89
  4. Step 4: Simplify right side
    52,370.87x = 2,864,232,513.31
  5. Step 5: Solve for x
    x = 2,864,232,513.31/52,370.87
  6. Step 6: Final answer
    x = 54,691.33

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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.