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Finding the Fourth Proportional to 263,661.68, 395,163.56 and 128,614.43

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Solution

The fourth proportional to 263,661.68, 395,163.56 and 128,614.43 is: 192,761.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,661.68 : 395,163.56 = 128,614.43 : x
  2. Step 2: Convert to fraction form
    263,661.68/395,163.56 = 128,614.43/x
  3. Step 3: Cross multiply
    263,661.68x = 395,163.56 × 128,614.43
  4. Step 4: Simplify right side
    263,661.68x = 50,823,737,335.62
  5. Step 5: Solve for x
    x = 50,823,737,335.62/263,661.68
  6. Step 6: Final answer
    x = 192,761.18

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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.