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Finding the Fourth Proportional to 10,591.22, 15,881.78 and 3,923.15

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Solution

The fourth proportional to 10,591.22, 15,881.78 and 3,923.15 is: 5,882.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,591.22 : 15,881.78 = 3,923.15 : x
  2. Step 2: Convert to fraction form
    10,591.22/15,881.78 = 3,923.15/x
  3. Step 3: Cross multiply
    10,591.22x = 15,881.78 × 3,923.15
  4. Step 4: Simplify right side
    10,591.22x = 62,306,506.18
  5. Step 5: Solve for x
    x = 62,306,506.18/10,591.22
  6. Step 6: Final answer
    x = 5,882.85

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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.