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Finding the Fourth Proportional to 88,656.14, 132,672.15 and 55,391.87

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Solution

The fourth proportional to 88,656.14, 132,672.15 and 55,391.87 is: 82,892.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,656.14 : 132,672.15 = 55,391.87 : x
  2. Step 2: Convert to fraction form
    88,656.14/132,672.15 = 55,391.87/x
  3. Step 3: Cross multiply
    88,656.14x = 132,672.15 × 55,391.87
  4. Step 4: Simplify right side
    88,656.14x = 7,348,957,822.06
  5. Step 5: Solve for x
    x = 7,348,957,822.06/88,656.14
  6. Step 6: Final answer
    x = 82,892.83

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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.