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Finding the Fourth Proportional to 225,940.86, 338,920.11 and 68,169.33

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Solution

The fourth proportional to 225,940.86, 338,920.11 and 68,169.33 is: 102,256.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,940.86 : 338,920.11 = 68,169.33 : x
  2. Step 2: Convert to fraction form
    225,940.86/338,920.11 = 68,169.33/x
  3. Step 3: Cross multiply
    225,940.86x = 338,920.11 × 68,169.33
  4. Step 4: Simplify right side
    225,940.86x = 23,103,956,822.23
  5. Step 5: Solve for x
    x = 23,103,956,822.23/225,940.86
  6. Step 6: Final answer
    x = 102,256.66

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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.