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Finding the Fourth Proportional to 68,765.64, 103,169.33 and 33,227.91

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Solution

The fourth proportional to 68,765.64, 103,169.33 and 33,227.91 is: 49,851.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,765.64 : 103,169.33 = 33,227.91 : x
  2. Step 2: Convert to fraction form
    68,765.64/103,169.33 = 33,227.91/x
  3. Step 3: Cross multiply
    68,765.64x = 103,169.33 × 33,227.91
  4. Step 4: Simplify right side
    68,765.64x = 3,428,101,045.86
  5. Step 5: Solve for x
    x = 3,428,101,045.86/68,765.64
  6. Step 6: Final answer
    x = 49,851.95

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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.