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Finding the Fourth Proportional to 396,391.02, 594,677.31 and 171,789.12

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Solution

The fourth proportional to 396,391.02, 594,677.31 and 171,789.12 is: 257,723.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,391.02 : 594,677.31 = 171,789.12 : x
  2. Step 2: Convert to fraction form
    396,391.02/594,677.31 = 171,789.12/x
  3. Step 3: Cross multiply
    396,391.02x = 594,677.31 × 171,789.12
  4. Step 4: Simplify right side
    396,391.02x = 102,159,091,768.87
  5. Step 5: Solve for x
    x = 102,159,091,768.87/396,391.02
  6. Step 6: Final answer
    x = 257,723.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.