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Finding the Fourth Proportional to 104,425.20, 156,637.80 and 25,540.20

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Solution

The fourth proportional to 104,425.20, 156,637.80 and 25,540.20 is: 38,310.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,425.20 : 156,637.80 = 25,540.20 : x
  2. Step 2: Convert to fraction form
    104,425.20/156,637.80 = 25,540.20/x
  3. Step 3: Cross multiply
    104,425.20x = 156,637.80 × 25,540.20
  4. Step 4: Simplify right side
    104,425.20x = 4,000,560,739.56
  5. Step 5: Solve for x
    x = 4,000,560,739.56/104,425.20
  6. Step 6: Final answer
    x = 38,310.30

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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.