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Finding the Fourth Proportional to 18,691.26, 28,042.34 and 6,040.73

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Solution

The fourth proportional to 18,691.26, 28,042.34 and 6,040.73 is: 9,062.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.26 : 28,042.34 = 6,040.73 : x
  2. Step 2: Convert to fraction form
    18,691.26/28,042.34 = 6,040.73/x
  3. Step 3: Cross multiply
    18,691.26x = 28,042.34 × 6,040.73
  4. Step 4: Simplify right side
    18,691.26x = 169,396,034.09
  5. Step 5: Solve for x
    x = 169,396,034.09/18,691.26
  6. Step 6: Final answer
    x = 9,062.85

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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.