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Finding the Fourth Proportional to 18,251.61, 27,377.34 and 4,400.61

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Solution

The fourth proportional to 18,251.61, 27,377.34 and 4,400.61 is: 6,600.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,251.61 : 27,377.34 = 4,400.61 : x
  2. Step 2: Convert to fraction form
    18,251.61/27,377.34 = 4,400.61/x
  3. Step 3: Cross multiply
    18,251.61x = 27,377.34 × 4,400.61
  4. Step 4: Simplify right side
    18,251.61x = 120,476,996.18
  5. Step 5: Solve for x
    x = 120,476,996.18/18,251.61
  6. Step 6: Final answer
    x = 6,600.90

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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.