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Finding the Fourth Proportional to 125,221.44, 187,892.96 and 55,091.68

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Solution

The fourth proportional to 125,221.44, 187,892.96 and 55,091.68 is: 82,664.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,221.44 : 187,892.96 = 55,091.68 : x
  2. Step 2: Convert to fraction form
    125,221.44/187,892.96 = 55,091.68/x
  3. Step 3: Cross multiply
    125,221.44x = 187,892.96 × 55,091.68
  4. Step 4: Simplify right side
    125,221.44x = 10,351,338,826.57
  5. Step 5: Solve for x
    x = 10,351,338,826.57/125,221.44
  6. Step 6: Final answer
    x = 82,664.27

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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.