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Finding the Fourth Proportional to 529,113.57, 730,182.23 and 287,400.85

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Solution

The fourth proportional to 529,113.57, 730,182.23 and 287,400.85 is: 396,616.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,113.57 : 730,182.23 = 287,400.85 : x
  2. Step 2: Convert to fraction form
    529,113.57/730,182.23 = 287,400.85/x
  3. Step 3: Cross multiply
    529,113.57x = 730,182.23 × 287,400.85
  4. Step 4: Simplify right side
    529,113.57x = 209,854,993,556.90
  5. Step 5: Solve for x
    x = 209,854,993,556.90/529,113.57
  6. Step 6: Final answer
    x = 396,616.16

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1.5x scale

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.