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Finding the Fourth Proportional to 529,068.44, 730,123.17 and 287,351.20

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Solution

The fourth proportional to 529,068.44, 730,123.17 and 287,351.20 is: 396,549.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,068.44 : 730,123.17 = 287,351.20 : x
  2. Step 2: Convert to fraction form
    529,068.44/730,123.17 = 287,351.20/x
  3. Step 3: Cross multiply
    529,068.44x = 730,123.17 × 287,351.20
  4. Step 4: Simplify right side
    529,068.44x = 209,801,765,396.69
  5. Step 5: Solve for x
    x = 209,801,765,396.69/529,068.44
  6. Step 6: Final answer
    x = 396,549.39

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Similar ratio
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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.