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Finding the Fourth Proportional to 168,631.20, 253,384.20 and 149,385.60

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Solution

The fourth proportional to 168,631.20, 253,384.20 and 149,385.60 is: 224,465.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,631.20 : 253,384.20 = 149,385.60 : x
  2. Step 2: Convert to fraction form
    168,631.20/253,384.20 = 149,385.60/x
  3. Step 3: Cross multiply
    168,631.20x = 253,384.20 × 149,385.60
  4. Step 4: Simplify right side
    168,631.20x = 37,851,950,747.52
  5. Step 5: Solve for x
    x = 37,851,950,747.52/168,631.20
  6. Step 6: Final answer
    x = 224,465.88

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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.