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Finding the Fourth Proportional to 72,079.88, 99,469.20 and 41,882.19

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Solution

The fourth proportional to 72,079.88, 99,469.20 and 41,882.19 is: 57,796.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,079.88 : 99,469.20 = 41,882.19 : x
  2. Step 2: Convert to fraction form
    72,079.88/99,469.20 = 41,882.19/x
  3. Step 3: Cross multiply
    72,079.88x = 99,469.20 × 41,882.19
  4. Step 4: Simplify right side
    72,079.88x = 4,165,987,938.46
  5. Step 5: Solve for x
    x = 4,165,987,938.46/72,079.88
  6. Step 6: Final answer
    x = 57,796.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.