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Finding the Fourth Proportional to 73,984.40, 110,976.60 and 27,231.20

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Solution

The fourth proportional to 73,984.40, 110,976.60 and 27,231.20 is: 40,846.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,984.40 : 110,976.60 = 27,231.20 : x
  2. Step 2: Convert to fraction form
    73,984.40/110,976.60 = 27,231.20/x
  3. Step 3: Cross multiply
    73,984.40x = 110,976.60 × 27,231.20
  4. Step 4: Simplify right side
    73,984.40x = 3,022,025,989.92
  5. Step 5: Solve for x
    x = 3,022,025,989.92/73,984.40
  6. Step 6: Final answer
    x = 40,846.80

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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.