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Finding the Fourth Proportional to 539,829.60, 809,744.40 and 499,279.20

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Solution

The fourth proportional to 539,829.60, 809,744.40 and 499,279.20 is: 748,918.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,829.60 : 809,744.40 = 499,279.20 : x
  2. Step 2: Convert to fraction form
    539,829.60/809,744.40 = 499,279.20/x
  3. Step 3: Cross multiply
    539,829.60x = 809,744.40 × 499,279.20
  4. Step 4: Simplify right side
    539,829.60x = 404,288,536,236.48
  5. Step 5: Solve for x
    x = 404,288,536,236.48/539,829.60
  6. Step 6: Final answer
    x = 748,918.80

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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.