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Finding the Fourth Proportional to 81,935.92, 122,906.22 and 44,513.92

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Solution

The fourth proportional to 81,935.92, 122,906.22 and 44,513.92 is: 66,772.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,935.92 : 122,906.22 = 44,513.92 : x
  2. Step 2: Convert to fraction form
    81,935.92/122,906.22 = 44,513.92/x
  3. Step 3: Cross multiply
    81,935.92x = 122,906.22 × 44,513.92
  4. Step 4: Simplify right side
    81,935.92x = 5,471,037,644.58
  5. Step 5: Solve for x
    x = 5,471,037,644.58/81,935.92
  6. Step 6: Final answer
    x = 66,772.15

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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.