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Finding the Fourth Proportional to 185,387.32, 278,121.48 and 67,046.32

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Solution

The fourth proportional to 185,387.32, 278,121.48 and 67,046.32 is: 100,584.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,387.32 : 278,121.48 = 67,046.32 : x
  2. Step 2: Convert to fraction form
    185,387.32/278,121.48 = 67,046.32/x
  3. Step 3: Cross multiply
    185,387.32x = 278,121.48 × 67,046.32
  4. Step 4: Simplify right side
    185,387.32x = 18,647,021,746.95
  5. Step 5: Solve for x
    x = 18,647,021,746.95/185,387.32
  6. Step 6: Final answer
    x = 100,584.13

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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.