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Finding the Fourth Proportional to 71,899.92, 99,221.88 and 41,702.76

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Solution

The fourth proportional to 71,899.92, 99,221.88 and 41,702.76 is: 57,549.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,899.92 : 99,221.88 = 41,702.76 : x
  2. Step 2: Convert to fraction form
    71,899.92/99,221.88 = 41,702.76/x
  3. Step 3: Cross multiply
    71,899.92x = 99,221.88 × 41,702.76
  4. Step 4: Simplify right side
    71,899.92x = 4,137,826,248.39
  5. Step 5: Solve for x
    x = 4,137,826,248.39/71,899.92
  6. Step 6: Final answer
    x = 57,549.80

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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.