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Finding the Fourth Proportional to 66,511.53, 99,691.97 and 22,127.85

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Solution

The fourth proportional to 66,511.53, 99,691.97 and 22,127.85 is: 33,166.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,511.53 : 99,691.97 = 22,127.85 : x
  2. Step 2: Convert to fraction form
    66,511.53/99,691.97 = 22,127.85/x
  3. Step 3: Cross multiply
    66,511.53x = 99,691.97 × 22,127.85
  4. Step 4: Simplify right side
    66,511.53x = 2,205,968,847.73
  5. Step 5: Solve for x
    x = 2,205,968,847.73/66,511.53
  6. Step 6: Final answer
    x = 33,166.71

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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.