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Finding the Fourth Proportional to 396,537.90, 547,231.95 and 215,257.26

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Solution

The fourth proportional to 396,537.90, 547,231.95 and 215,257.26 is: 297,060.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,537.90 : 547,231.95 = 215,257.26 : x
  2. Step 2: Convert to fraction form
    396,537.90/547,231.95 = 215,257.26/x
  3. Step 3: Cross multiply
    396,537.90x = 547,231.95 × 215,257.26
  4. Step 4: Simplify right side
    396,537.90x = 117,795,650,141.46
  5. Step 5: Solve for x
    x = 117,795,650,141.46/396,537.90
  6. Step 6: Final answer
    x = 297,060.26

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