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Finding the Fourth Proportional to 92,672.72, 127,786.92 and 68,843.60

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Solution

The fourth proportional to 92,672.72, 127,786.92 and 68,843.60 is: 94,928.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,672.72 : 127,786.92 = 68,843.60 : x
  2. Step 2: Convert to fraction form
    92,672.72/127,786.92 = 68,843.60/x
  3. Step 3: Cross multiply
    92,672.72x = 127,786.92 × 68,843.60
  4. Step 4: Simplify right side
    92,672.72x = 8,797,311,605.71
  5. Step 5: Solve for x
    x = 8,797,311,605.71/92,672.72
  6. Step 6: Final answer
    x = 94,928.82

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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.