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Finding the Fourth Proportional to 534,439.05, 801,658.67 and 135,080.97

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Solution

The fourth proportional to 534,439.05, 801,658.67 and 135,080.97 is: 202,621.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,439.05 : 801,658.67 = 135,080.97 : x
  2. Step 2: Convert to fraction form
    534,439.05/801,658.67 = 135,080.97/x
  3. Step 3: Cross multiply
    534,439.05x = 801,658.67 × 135,080.97
  4. Step 4: Simplify right side
    534,439.05x = 108,288,830,077.11
  5. Step 5: Solve for x
    x = 108,288,830,077.11/534,439.05
  6. Step 6: Final answer
    x = 202,621.48

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Double scale
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Similar ratio
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1.5x scale

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.