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Finding the Fourth Proportional to 73,930.80, 110,896.20 and 54,247.80

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Solution

The fourth proportional to 73,930.80, 110,896.20 and 54,247.80 is: 81,371.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,930.80 : 110,896.20 = 54,247.80 : x
  2. Step 2: Convert to fraction form
    73,930.80/110,896.20 = 54,247.80/x
  3. Step 3: Cross multiply
    73,930.80x = 110,896.20 × 54,247.80
  4. Step 4: Simplify right side
    73,930.80x = 6,015,874,878.36
  5. Step 5: Solve for x
    x = 6,015,874,878.36/73,930.80
  6. Step 6: Final answer
    x = 81,371.70

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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.