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Finding the Fourth Proportional to 221,198.67, 331,797.92 and 54,986.67

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Solution

The fourth proportional to 221,198.67, 331,797.92 and 54,986.67 is: 82,479.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,198.67 : 331,797.92 = 54,986.67 : x
  2. Step 2: Convert to fraction form
    221,198.67/331,797.92 = 54,986.67/x
  3. Step 3: Cross multiply
    221,198.67x = 331,797.92 × 54,986.67
  4. Step 4: Simplify right side
    221,198.67x = 18,244,462,458.79
  5. Step 5: Solve for x
    x = 18,244,462,458.79/221,198.67
  6. Step 6: Final answer
    x = 82,479.98

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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.