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Finding the Fourth Proportional to 63,636.87, 87,808.32 and 36,781.86

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Solution

The fourth proportional to 63,636.87, 87,808.32 and 36,781.86 is: 50,752.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,636.87 : 87,808.32 = 36,781.86 : x
  2. Step 2: Convert to fraction form
    63,636.87/87,808.32 = 36,781.86/x
  3. Step 3: Cross multiply
    63,636.87x = 87,808.32 × 36,781.86
  4. Step 4: Simplify right side
    63,636.87x = 3,229,753,333.08
  5. Step 5: Solve for x
    x = 3,229,753,333.08/63,636.87
  6. Step 6: Final answer
    x = 50,752.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.