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Finding the Fourth Proportional to 221,797.02, 332,790.84 and 72,083.20

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Solution

The fourth proportional to 221,797.02, 332,790.84 and 72,083.20 is: 108,155.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,797.02 : 332,790.84 = 72,083.20 : x
  2. Step 2: Convert to fraction form
    221,797.02/332,790.84 = 72,083.20/x
  3. Step 3: Cross multiply
    221,797.02x = 332,790.84 × 72,083.20
  4. Step 4: Simplify right side
    221,797.02x = 23,988,628,677.89
  5. Step 5: Solve for x
    x = 23,988,628,677.89/221,797.02
  6. Step 6: Final answer
    x = 108,155.78

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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.