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Finding the Fourth Proportional to 193,087.20, 289,630.80 and 189,976.80

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Solution

The fourth proportional to 193,087.20, 289,630.80 and 189,976.80 is: 284,965.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,087.20 : 289,630.80 = 189,976.80 : x
  2. Step 2: Convert to fraction form
    193,087.20/289,630.80 = 189,976.80/x
  3. Step 3: Cross multiply
    193,087.20x = 289,630.80 × 189,976.80
  4. Step 4: Simplify right side
    193,087.20x = 55,023,132,565.44
  5. Step 5: Solve for x
    x = 55,023,132,565.44/193,087.20
  6. Step 6: Final answer
    x = 284,965.20

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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.