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Finding the Fourth Proportional to 67,198.99, 100,786.19 and 22,218.72

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Solution

The fourth proportional to 67,198.99, 100,786.19 and 22,218.72 is: 33,324.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,198.99 : 100,786.19 = 22,218.72 : x
  2. Step 2: Convert to fraction form
    67,198.99/100,786.19 = 22,218.72/x
  3. Step 3: Cross multiply
    67,198.99x = 100,786.19 × 22,218.72
  4. Step 4: Simplify right side
    67,198.99x = 2,239,340,457.20
  5. Step 5: Solve for x
    x = 2,239,340,457.20/67,198.99
  6. Step 6: Final answer
    x = 33,324.02

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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.