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Finding the Fourth Proportional to 383,654.85, 529,432.11 and 211,572.73

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Solution

The fourth proportional to 383,654.85, 529,432.11 and 211,572.73 is: 291,963.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,654.85 : 529,432.11 = 211,572.73 : x
  2. Step 2: Convert to fraction form
    383,654.85/529,432.11 = 211,572.73/x
  3. Step 3: Cross multiply
    383,654.85x = 529,432.11 × 211,572.73
  4. Step 4: Simplify right side
    383,654.85x = 112,013,396,862.36
  5. Step 5: Solve for x
    x = 112,013,396,862.36/383,654.85
  6. Step 6: Final answer
    x = 291,963.98

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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.