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Finding the Fourth Proportional to 220,901.20, 331,351.80 and 196,406.80

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Solution

The fourth proportional to 220,901.20, 331,351.80 and 196,406.80 is: 294,610.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,901.20 : 331,351.80 = 196,406.80 : x
  2. Step 2: Convert to fraction form
    220,901.20/331,351.80 = 196,406.80/x
  3. Step 3: Cross multiply
    220,901.20x = 331,351.80 × 196,406.80
  4. Step 4: Simplify right side
    220,901.20x = 65,079,746,712.24
  5. Step 5: Solve for x
    x = 65,079,746,712.24/220,901.20
  6. Step 6: Final answer
    x = 294,610.20

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1.5x scale

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.