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Finding the Fourth Proportional to 625,115.88, 862,659.11 and 338,637.11

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Solution

The fourth proportional to 625,115.88, 862,659.11 and 338,637.11 is: 467,318.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,115.88 : 862,659.11 = 338,637.11 : x
  2. Step 2: Convert to fraction form
    625,115.88/862,659.11 = 338,637.11/x
  3. Step 3: Cross multiply
    625,115.88x = 862,659.11 × 338,637.11
  4. Step 4: Simplify right side
    625,115.88x = 292,128,384,458.87
  5. Step 5: Solve for x
    x = 292,128,384,458.87/625,115.88
  6. Step 6: Final answer
    x = 467,318.77

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.