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Finding the Fourth Proportional to 143,791.52, 198,537.92 and 92,834.01

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Solution

The fourth proportional to 143,791.52, 198,537.92 and 92,834.01 is: 128,179.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,791.52 : 198,537.92 = 92,834.01 : x
  2. Step 2: Convert to fraction form
    143,791.52/198,537.92 = 92,834.01/x
  3. Step 3: Cross multiply
    143,791.52x = 198,537.92 × 92,834.01
  4. Step 4: Simplify right side
    143,791.52x = 18,431,071,134.62
  5. Step 5: Solve for x
    x = 18,431,071,134.62/143,791.52
  6. Step 6: Final answer
    x = 128,179.13

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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.