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Finding the Fourth Proportional to 66,449.57, 99,691.16 and 22,076.55

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Solution

The fourth proportional to 66,449.57, 99,691.16 and 22,076.55 is: 33,120.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,449.57 : 99,691.16 = 22,076.55 : x
  2. Step 2: Convert to fraction form
    66,449.57/99,691.16 = 22,076.55/x
  3. Step 3: Cross multiply
    66,449.57x = 99,691.16 × 22,076.55
  4. Step 4: Simplify right side
    66,449.57x = 2,200,836,767.92
  5. Step 5: Solve for x
    x = 2,200,836,767.92/66,449.57
  6. Step 6: Final answer
    x = 33,120.41

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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.