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Finding the Fourth Proportional to 68,679.92, 94,789.71 and 47,152.06

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Solution

The fourth proportional to 68,679.92, 94,789.71 and 47,152.06 is: 65,077.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,679.92 : 94,789.71 = 47,152.06 : x
  2. Step 2: Convert to fraction form
    68,679.92/94,789.71 = 47,152.06/x
  3. Step 3: Cross multiply
    68,679.92x = 94,789.71 × 47,152.06
  4. Step 4: Simplify right side
    68,679.92x = 4,469,530,057.30
  5. Step 5: Solve for x
    x = 4,469,530,057.30/68,679.92
  6. Step 6: Final answer
    x = 65,077.69

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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.