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Finding the Fourth Proportional to 396,687.19, 547,351.29 and 235,592.77

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Solution

The fourth proportional to 396,687.19, 547,351.29 and 235,592.77 is: 325,072.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,687.19 : 547,351.29 = 235,592.77 : x
  2. Step 2: Convert to fraction form
    396,687.19/547,351.29 = 235,592.77/x
  3. Step 3: Cross multiply
    396,687.19x = 547,351.29 × 235,592.77
  4. Step 4: Simplify right side
    396,687.19x = 128,952,006,574.17
  5. Step 5: Solve for x
    x = 128,952,006,574.17/396,687.19
  6. Step 6: Final answer
    x = 325,072.27

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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.