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Finding the Fourth Proportional to 396,520.13, 547,198.20 and 215,232.03

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Solution

The fourth proportional to 396,520.13, 547,198.20 and 215,232.03 is: 297,020.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,520.13 : 547,198.20 = 215,232.03 : x
  2. Step 2: Convert to fraction form
    396,520.13/547,198.20 = 215,232.03/x
  3. Step 3: Cross multiply
    396,520.13x = 547,198.20 × 215,232.03
  4. Step 4: Simplify right side
    396,520.13x = 117,774,579,398.35
  5. Step 5: Solve for x
    x = 117,774,579,398.35/396,520.13
  6. Step 6: Final answer
    x = 297,020.43

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