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Finding the Fourth Proportional to 225,432.86, 338,155.44 and 67,661.31

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Solution

The fourth proportional to 225,432.86, 338,155.44 and 67,661.31 is: 101,493.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,432.86 : 338,155.44 = 67,661.31 : x
  2. Step 2: Convert to fraction form
    225,432.86/338,155.44 = 67,661.31/x
  3. Step 3: Cross multiply
    225,432.86x = 338,155.44 × 67,661.31
  4. Step 4: Simplify right side
    225,432.86x = 22,880,040,054.03
  5. Step 5: Solve for x
    x = 22,880,040,054.03/225,432.86
  6. Step 6: Final answer
    x = 101,493.81

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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.