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Finding the Fourth Proportional to 625,082.11, 862,613.25 and 338,602.12

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Solution

The fourth proportional to 625,082.11, 862,613.25 and 338,602.12 is: 467,270.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,082.11 : 862,613.25 = 338,602.12 : x
  2. Step 2: Convert to fraction form
    625,082.11/862,613.25 = 338,602.12/x
  3. Step 3: Cross multiply
    625,082.11x = 862,613.25 × 338,602.12
  4. Step 4: Simplify right side
    625,082.11x = 292,082,676,616.00
  5. Step 5: Solve for x
    x = 292,082,676,616.00/625,082.11
  6. Step 6: Final answer
    x = 467,270.89

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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.