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Finding the Fourth Proportional to 539,805.60, 809,708.40 and 499,255.20

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Solution

The fourth proportional to 539,805.60, 809,708.40 and 499,255.20 is: 748,882.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,805.60 : 809,708.40 = 499,255.20 : x
  2. Step 2: Convert to fraction form
    539,805.60/809,708.40 = 499,255.20/x
  3. Step 3: Cross multiply
    539,805.60x = 809,708.40 × 499,255.20
  4. Step 4: Simplify right side
    539,805.60x = 404,251,129,183.68
  5. Step 5: Solve for x
    x = 404,251,129,183.68/539,805.60
  6. Step 6: Final answer
    x = 748,882.80

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.