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Finding the Fourth Proportional to 529,114.57, 730,183.61 and 287,401.85

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Solution

The fourth proportional to 529,114.57, 730,183.61 and 287,401.85 is: 396,617.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,114.57 : 730,183.61 = 287,401.85 : x
  2. Step 2: Convert to fraction form
    529,114.57/730,183.61 = 287,401.85/x
  3. Step 3: Cross multiply
    529,114.57x = 730,183.61 × 287,401.85
  4. Step 4: Simplify right side
    529,114.57x = 209,856,120,353.68
  5. Step 5: Solve for x
    x = 209,856,120,353.68/529,114.57
  6. Step 6: Final answer
    x = 396,617.54

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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.