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Finding the Fourth Proportional to 73,947.60, 110,921.40 and 61,481.70

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Solution

The fourth proportional to 73,947.60, 110,921.40 and 61,481.70 is: 92,222.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,947.60 : 110,921.40 = 61,481.70 : x
  2. Step 2: Convert to fraction form
    73,947.60/110,921.40 = 61,481.70/x
  3. Step 3: Cross multiply
    73,947.60x = 110,921.40 × 61,481.70
  4. Step 4: Simplify right side
    73,947.60x = 6,819,636,238.38
  5. Step 5: Solve for x
    x = 6,819,636,238.38/73,947.60
  6. Step 6: Final answer
    x = 92,222.55

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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.