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Finding the Fourth Proportional to 419,747.70, 629,621.55 and 354,793.80

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Solution

The fourth proportional to 419,747.70, 629,621.55 and 354,793.80 is: 532,190.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,747.70 : 629,621.55 = 354,793.80 : x
  2. Step 2: Convert to fraction form
    419,747.70/629,621.55 = 354,793.80/x
  3. Step 3: Cross multiply
    419,747.70x = 629,621.55 × 354,793.80
  4. Step 4: Simplify right side
    419,747.70x = 223,385,822,286.39
  5. Step 5: Solve for x
    x = 223,385,822,286.39/419,747.70
  6. Step 6: Final answer
    x = 532,190.70

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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.