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Finding the Fourth Proportional to 221,720.20, 332,580.30 and 162,671.20

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Solution

The fourth proportional to 221,720.20, 332,580.30 and 162,671.20 is: 244,006.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,720.20 : 332,580.30 = 162,671.20 : x
  2. Step 2: Convert to fraction form
    221,720.20/332,580.30 = 162,671.20/x
  3. Step 3: Cross multiply
    221,720.20x = 332,580.30 × 162,671.20
  4. Step 4: Simplify right side
    221,720.20x = 54,101,236,497.36
  5. Step 5: Solve for x
    x = 54,101,236,497.36/221,720.20
  6. Step 6: Final answer
    x = 244,006.80

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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.