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Finding the Fourth Proportional to 218,876.34, 328,324.56 and 67,062.54

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Solution

The fourth proportional to 218,876.34, 328,324.56 and 67,062.54 is: 100,596.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,876.34 : 328,324.56 = 67,062.54 : x
  2. Step 2: Convert to fraction form
    218,876.34/328,324.56 = 67,062.54/x
  3. Step 3: Cross multiply
    218,876.34x = 328,324.56 × 67,062.54
  4. Step 4: Simplify right side
    218,876.34x = 22,018,277,296.36
  5. Step 5: Solve for x
    x = 22,018,277,296.36/218,876.34
  6. Step 6: Final answer
    x = 100,596.88

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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.