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Finding the Fourth Proportional to 577,793.70, 866,690.55 and 388,836.90

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Solution

The fourth proportional to 577,793.70, 866,690.55 and 388,836.90 is: 583,255.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,793.70 : 866,690.55 = 388,836.90 : x
  2. Step 2: Convert to fraction form
    577,793.70/866,690.55 = 388,836.90/x
  3. Step 3: Cross multiply
    577,793.70x = 866,690.55 × 388,836.90
  4. Step 4: Simplify right side
    577,793.70x = 337,001,266,721.30
  5. Step 5: Solve for x
    x = 337,001,266,721.30/577,793.70
  6. Step 6: Final answer
    x = 583,255.35

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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.