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Finding the Fourth Proportional to 264,481.12, 396,721.68 and 67,489.12

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Solution

The fourth proportional to 264,481.12, 396,721.68 and 67,489.12 is: 101,233.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,481.12 : 396,721.68 = 67,489.12 : x
  2. Step 2: Convert to fraction form
    264,481.12/396,721.68 = 67,489.12/x
  3. Step 3: Cross multiply
    264,481.12x = 396,721.68 × 67,489.12
  4. Step 4: Simplify right side
    264,481.12x = 26,774,397,068.12
  5. Step 5: Solve for x
    x = 26,774,397,068.12/264,481.12
  6. Step 6: Final answer
    x = 101,233.68

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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.