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Finding the Fourth Proportional to 221,797.40, 332,791.40 and 72,083.57

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Solution

The fourth proportional to 221,797.40, 332,791.40 and 72,083.57 is: 108,156.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,797.40 : 332,791.40 = 72,083.57 : x
  2. Step 2: Convert to fraction form
    221,797.40/332,791.40 = 72,083.57/x
  3. Step 3: Cross multiply
    221,797.40x = 332,791.40 × 72,083.57
  4. Step 4: Simplify right side
    221,797.40x = 23,988,790,693.55
  5. Step 5: Solve for x
    x = 23,988,790,693.55/221,797.40
  6. Step 6: Final answer
    x = 108,156.32

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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.