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Finding the Fourth Proportional to 539,648.80, 809,473.20 and 516,612.40

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Solution

The fourth proportional to 539,648.80, 809,473.20 and 516,612.40 is: 774,918.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,648.80 : 809,473.20 = 516,612.40 : x
  2. Step 2: Convert to fraction form
    539,648.80/809,473.20 = 516,612.40/x
  3. Step 3: Cross multiply
    539,648.80x = 809,473.20 × 516,612.40
  4. Step 4: Simplify right side
    539,648.80x = 418,183,892,587.68
  5. Step 5: Solve for x
    x = 418,183,892,587.68/539,648.80
  6. Step 6: Final answer
    x = 774,918.60

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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.