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Finding the Fourth Proportional to 539,770.80, 809,656.20 and 516,734.40

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Solution

The fourth proportional to 539,770.80, 809,656.20 and 516,734.40 is: 775,101.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,770.80 : 809,656.20 = 516,734.40 : x
  2. Step 2: Convert to fraction form
    539,770.80/809,656.20 = 516,734.40/x
  3. Step 3: Cross multiply
    539,770.80x = 809,656.20 × 516,734.40
  4. Step 4: Simplify right side
    539,770.80x = 418,377,210,713.28
  5. Step 5: Solve for x
    x = 418,377,210,713.28/539,770.80
  6. Step 6: Final answer
    x = 775,101.60

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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.