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Finding the Fourth Proportional to 168,040.80, 252,061.20 and 74,546.55

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Solution

The fourth proportional to 168,040.80, 252,061.20 and 74,546.55 is: 111,819.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,040.80 : 252,061.20 = 74,546.55 : x
  2. Step 2: Convert to fraction form
    168,040.80/252,061.20 = 74,546.55/x
  3. Step 3: Cross multiply
    168,040.80x = 252,061.20 × 74,546.55
  4. Step 4: Simplify right side
    168,040.80x = 18,790,292,848.86
  5. Step 5: Solve for x
    x = 18,790,292,848.86/168,040.80
  6. Step 6: Final answer
    x = 111,819.83

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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.