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Finding the Fourth Proportional to 263,011.80, 394,517.70 and 263,011.80

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Solution

The fourth proportional to 263,011.80, 394,517.70 and 263,011.80 is: 394,517.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,011.80 : 394,517.70 = 263,011.80 : x
  2. Step 2: Convert to fraction form
    263,011.80/394,517.70 = 263,011.80/x
  3. Step 3: Cross multiply
    263,011.80x = 394,517.70 × 263,011.80
  4. Step 4: Simplify right side
    263,011.80x = 103,762,810,408.86
  5. Step 5: Solve for x
    x = 103,762,810,408.86/263,011.80
  6. Step 6: Final answer
    x = 394,517.70

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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.