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Finding the Fourth Proportional to 221,763.93, 332,576.18 and 71,969.61

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Solution

The fourth proportional to 221,763.93, 332,576.18 and 71,969.61 is: 107,931.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,763.93 : 332,576.18 = 71,969.61 : x
  2. Step 2: Convert to fraction form
    221,763.93/332,576.18 = 71,969.61/x
  3. Step 3: Cross multiply
    221,763.93x = 332,576.18 × 71,969.61
  4. Step 4: Simplify right side
    221,763.93x = 23,935,379,127.09
  5. Step 5: Solve for x
    x = 23,935,379,127.09/221,763.93
  6. Step 6: Final answer
    x = 107,931.80

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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.