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Finding the Fourth Proportional to 18,904.52, 28,350.72 and 6,251.92

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Solution

The fourth proportional to 18,904.52, 28,350.72 and 6,251.92 is: 9,375.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,904.52 : 28,350.72 = 6,251.92 : x
  2. Step 2: Convert to fraction form
    18,904.52/28,350.72 = 6,251.92/x
  3. Step 3: Cross multiply
    18,904.52x = 28,350.72 × 6,251.92
  4. Step 4: Simplify right side
    18,904.52x = 177,246,433.38
  5. Step 5: Solve for x
    x = 177,246,433.38/18,904.52
  6. Step 6: Final answer
    x = 9,375.88

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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.