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Finding the Fourth Proportional to 221,940.63, 332,960.15 and 64,157.09

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Solution

The fourth proportional to 221,940.63, 332,960.15 and 64,157.09 is: 96,249.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,940.63 : 332,960.15 = 64,157.09 : x
  2. Step 2: Convert to fraction form
    221,940.63/332,960.15 = 64,157.09/x
  3. Step 3: Cross multiply
    221,940.63x = 332,960.15 × 64,157.09
  4. Step 4: Simplify right side
    221,940.63x = 21,361,752,805.56
  5. Step 5: Solve for x
    x = 21,361,752,805.56/221,940.63
  6. Step 6: Final answer
    x = 96,249.85

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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.