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Finding the Fourth Proportional to 129,791.72, 194,614.68 and 41,067.56

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Solution

The fourth proportional to 129,791.72, 194,614.68 and 41,067.56 is: 61,578.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,791.72 : 194,614.68 = 41,067.56 : x
  2. Step 2: Convert to fraction form
    129,791.72/194,614.68 = 41,067.56/x
  3. Step 3: Cross multiply
    129,791.72x = 194,614.68 × 41,067.56
  4. Step 4: Simplify right side
    129,791.72x = 7,992,350,047.78
  5. Step 5: Solve for x
    x = 7,992,350,047.78/129,791.72
  6. Step 6: Final answer
    x = 61,578.27

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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.