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Finding the Fourth Proportional to 220,067.20, 329,809.20 and 194,989.60

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Solution

The fourth proportional to 220,067.20, 329,809.20 and 194,989.60 is: 292,226.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,067.20 : 329,809.20 = 194,989.60 : x
  2. Step 2: Convert to fraction form
    220,067.20/329,809.20 = 194,989.60/x
  3. Step 3: Cross multiply
    220,067.20x = 329,809.20 × 194,989.60
  4. Step 4: Simplify right side
    220,067.20x = 64,309,363,984.32
  5. Step 5: Solve for x
    x = 64,309,363,984.32/220,067.20
  6. Step 6: Final answer
    x = 292,226.03

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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.