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Finding the Fourth Proportional to 100,930.91, 151,425.97 and 29,855.43

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Solution

The fourth proportional to 100,930.91, 151,425.97 and 29,855.43 is: 44,791.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,930.91 : 151,425.97 = 29,855.43 : x
  2. Step 2: Convert to fraction form
    100,930.91/151,425.97 = 29,855.43/x
  3. Step 3: Cross multiply
    100,930.91x = 151,425.97 × 29,855.43
  4. Step 4: Simplify right side
    100,930.91x = 4,520,887,447.52
  5. Step 5: Solve for x
    x = 4,520,887,447.52/100,930.91
  6. Step 6: Final answer
    x = 44,791.90

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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.