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Finding the Fourth Proportional to 156,752.80, 235,129.20 and 38,425.30

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Solution

The fourth proportional to 156,752.80, 235,129.20 and 38,425.30 is: 57,637.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,752.80 : 235,129.20 = 38,425.30 : x
  2. Step 2: Convert to fraction form
    156,752.80/235,129.20 = 38,425.30/x
  3. Step 3: Cross multiply
    156,752.80x = 235,129.20 × 38,425.30
  4. Step 4: Simplify right side
    156,752.80x = 9,034,910,048.76
  5. Step 5: Solve for x
    x = 9,034,910,048.76/156,752.80
  6. Step 6: Final answer
    x = 57,637.95

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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.