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Finding the Fourth Proportional to 385,942.70, 532,600.92 and 235,039.70

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Solution

The fourth proportional to 385,942.70, 532,600.92 and 235,039.70 is: 324,354.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,942.70 : 532,600.92 = 235,039.70 : x
  2. Step 2: Convert to fraction form
    385,942.70/532,600.92 = 235,039.70/x
  3. Step 3: Cross multiply
    385,942.70x = 532,600.92 × 235,039.70
  4. Step 4: Simplify right side
    385,942.70x = 125,182,360,456.52
  5. Step 5: Solve for x
    x = 125,182,360,456.52/385,942.70
  6. Step 6: Final answer
    x = 324,354.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.