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Finding the Fourth Proportional to 221,469.05, 332,256.48 and 71,709.50

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Solution

The fourth proportional to 221,469.05, 332,256.48 and 71,709.50 is: 107,581.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,469.05 : 332,256.48 = 71,709.50 : x
  2. Step 2: Convert to fraction form
    221,469.05/332,256.48 = 71,709.50/x
  3. Step 3: Cross multiply
    221,469.05x = 332,256.48 × 71,709.50
  4. Step 4: Simplify right side
    221,469.05x = 23,825,946,052.56
  5. Step 5: Solve for x
    x = 23,825,946,052.56/221,469.05
  6. Step 6: Final answer
    x = 107,581.38

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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.