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Finding the Fourth Proportional to 63,854.64, 88,129.89 and 48,718.68

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Solution

The fourth proportional to 63,854.64, 88,129.89 and 48,718.68 is: 67,239.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,854.64 : 88,129.89 = 48,718.68 : x
  2. Step 2: Convert to fraction form
    63,854.64/88,129.89 = 48,718.68/x
  3. Step 3: Cross multiply
    63,854.64x = 88,129.89 × 48,718.68
  4. Step 4: Simplify right side
    63,854.64x = 4,293,571,909.35
  5. Step 5: Solve for x
    x = 4,293,571,909.35/63,854.64
  6. Step 6: Final answer
    x = 67,239.78

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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.