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Finding the Fourth Proportional to 225,543.06, 338,343.78 and 67,787.46

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Solution

The fourth proportional to 225,543.06, 338,343.78 and 67,787.46 is: 101,689.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,543.06 : 338,343.78 = 67,787.46 : x
  2. Step 2: Convert to fraction form
    225,543.06/338,343.78 = 67,787.46/x
  3. Step 3: Cross multiply
    225,543.06x = 338,343.78 × 67,787.46
  4. Step 4: Simplify right side
    225,543.06x = 22,935,465,453.00
  5. Step 5: Solve for x
    x = 22,935,465,453.00/225,543.06
  6. Step 6: Final answer
    x = 101,689.96

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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.