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Finding the Fourth Proportional to 396,381.59, 594,663.21 and 171,779.73

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Solution

The fourth proportional to 396,381.59, 594,663.21 and 171,779.73 is: 257,708.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,381.59 : 594,663.21 = 171,779.73 : x
  2. Step 2: Convert to fraction form
    396,381.59/594,663.21 = 171,779.73/x
  3. Step 3: Cross multiply
    396,381.59x = 594,663.21 × 171,779.73
  4. Step 4: Simplify right side
    396,381.59x = 102,151,085,654.73
  5. Step 5: Solve for x
    x = 102,151,085,654.73/396,381.59
  6. Step 6: Final answer
    x = 257,708.96

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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.