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Finding the Fourth Proportional to 221,728.75, 332,614.92 and 59,620.78

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Solution

The fourth proportional to 221,728.75, 332,614.92 and 59,620.78 is: 89,437.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,728.75 : 332,614.92 = 59,620.78 : x
  2. Step 2: Convert to fraction form
    221,728.75/332,614.92 = 59,620.78/x
  3. Step 3: Cross multiply
    221,728.75x = 332,614.92 × 59,620.78
  4. Step 4: Simplify right side
    221,728.75x = 19,830,760,970.04
  5. Step 5: Solve for x
    x = 19,830,760,970.04/221,728.75
  6. Step 6: Final answer
    x = 89,437.03

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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.