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Finding the Fourth Proportional to 192,910.60, 289,399.92 and 66,540.88

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Solution

The fourth proportional to 192,910.60, 289,399.92 and 66,540.88 is: 99,823.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,910.60 : 289,399.92 = 66,540.88 : x
  2. Step 2: Convert to fraction form
    192,910.60/289,399.92 = 66,540.88/x
  3. Step 3: Cross multiply
    192,910.60x = 289,399.92 × 66,540.88
  4. Step 4: Simplify right side
    192,910.60x = 19,256,925,348.73
  5. Step 5: Solve for x
    x = 19,256,925,348.73/192,910.60
  6. Step 6: Final answer
    x = 99,823.05

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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.