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Finding the Fourth Proportional to 529,115.58, 730,184.99 and 287,402.85

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Solution

The fourth proportional to 529,115.58, 730,184.99 and 287,402.85 is: 396,618.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,115.58 : 730,184.99 = 287,402.85 : x
  2. Step 2: Convert to fraction form
    529,115.58/730,184.99 = 287,402.85/x
  3. Step 3: Cross multiply
    529,115.58x = 730,184.99 × 287,402.85
  4. Step 4: Simplify right side
    529,115.58x = 209,857,245,716.21
  5. Step 5: Solve for x
    x = 209,857,245,716.21/529,115.58
  6. Step 6: Final answer
    x = 396,618.91

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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.