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Finding the Fourth Proportional to 63,619.96, 87,781.62 and 38,468.92

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Solution

The fourth proportional to 63,619.96, 87,781.62 and 38,468.92 is: 53,078.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,619.96 : 87,781.62 = 38,468.92 : x
  2. Step 2: Convert to fraction form
    63,619.96/87,781.62 = 38,468.92/x
  3. Step 3: Cross multiply
    63,619.96x = 87,781.62 × 38,468.92
  4. Step 4: Simplify right side
    63,619.96x = 3,376,864,117.25
  5. Step 5: Solve for x
    x = 3,376,864,117.25/63,619.96
  6. Step 6: Final answer
    x = 53,078.69

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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.