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Finding the Fourth Proportional to 68,930.92, 95,125.58 and 66,546.80

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Solution

The fourth proportional to 68,930.92, 95,125.58 and 66,546.80 is: 91,835.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,930.92 : 95,125.58 = 66,546.80 : x
  2. Step 2: Convert to fraction form
    68,930.92/95,125.58 = 66,546.80/x
  3. Step 3: Cross multiply
    68,930.92x = 95,125.58 × 66,546.80
  4. Step 4: Simplify right side
    68,930.92x = 6,330,302,947.14
  5. Step 5: Solve for x
    x = 6,330,302,947.14/68,930.92
  6. Step 6: Final answer
    x = 91,835.46

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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.