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Finding the Fourth Proportional to 218,467.60, 327,712.20 and 113,491.60

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Solution

The fourth proportional to 218,467.60, 327,712.20 and 113,491.60 is: 170,243.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,467.60 : 327,712.20 = 113,491.60 : x
  2. Step 2: Convert to fraction form
    218,467.60/327,712.20 = 113,491.60/x
  3. Step 3: Cross multiply
    218,467.60x = 327,712.20 × 113,491.60
  4. Step 4: Simplify right side
    218,467.60x = 37,192,581,917.52
  5. Step 5: Solve for x
    x = 37,192,581,917.52/218,467.60
  6. Step 6: Final answer
    x = 170,243.01

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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.