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Finding the Fourth Proportional to 68,691.40, 94,797.69 and 38,474.95

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Solution

The fourth proportional to 68,691.40, 94,797.69 and 38,474.95 is: 53,097.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,691.40 : 94,797.69 = 38,474.95 : x
  2. Step 2: Convert to fraction form
    68,691.40/94,797.69 = 38,474.95/x
  3. Step 3: Cross multiply
    68,691.40x = 94,797.69 × 38,474.95
  4. Step 4: Simplify right side
    68,691.40x = 3,647,336,382.87
  5. Step 5: Solve for x
    x = 3,647,336,382.87/68,691.40
  6. Step 6: Final answer
    x = 53,097.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.