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Finding the Fourth Proportional to 221,449.70, 332,223.15 and 71,696.90

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Solution

The fourth proportional to 221,449.70, 332,223.15 and 71,696.90 is: 107,561.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,449.70 : 332,223.15 = 71,696.90 : x
  2. Step 2: Convert to fraction form
    221,449.70/332,223.15 = 71,696.90/x
  3. Step 3: Cross multiply
    221,449.70x = 332,223.15 × 71,696.90
  4. Step 4: Simplify right side
    221,449.70x = 23,819,369,963.24
  5. Step 5: Solve for x
    x = 23,819,369,963.24/221,449.70
  6. Step 6: Final answer
    x = 107,561.08

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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.