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Finding the Fourth Proportional to 71,961.92, 107,877.54 and 25,189.28

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Solution

The fourth proportional to 71,961.92, 107,877.54 and 25,189.28 is: 37,761.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,961.92 : 107,877.54 = 25,189.28 : x
  2. Step 2: Convert to fraction form
    71,961.92/107,877.54 = 25,189.28/x
  3. Step 3: Cross multiply
    71,961.92x = 107,877.54 × 25,189.28
  4. Step 4: Simplify right side
    71,961.92x = 2,717,357,560.77
  5. Step 5: Solve for x
    x = 2,717,357,560.77/71,961.92
  6. Step 6: Final answer
    x = 37,761.05

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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.