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Finding the Fourth Proportional to 68,694.52, 103,041.78 and 21,951.04

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Solution

The fourth proportional to 68,694.52, 103,041.78 and 21,951.04 is: 32,926.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,694.52 : 103,041.78 = 21,951.04 : x
  2. Step 2: Convert to fraction form
    68,694.52/103,041.78 = 21,951.04/x
  3. Step 3: Cross multiply
    68,694.52x = 103,041.78 × 21,951.04
  4. Step 4: Simplify right side
    68,694.52x = 2,261,874,234.45
  5. Step 5: Solve for x
    x = 2,261,874,234.45/68,694.52
  6. Step 6: Final answer
    x = 32,926.56

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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.