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Finding the Fourth Proportional to 193,351.73, 290,041.40 and 80,918.73

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Solution

The fourth proportional to 193,351.73, 290,041.40 and 80,918.73 is: 121,383.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,351.73 : 290,041.40 = 80,918.73 : x
  2. Step 2: Convert to fraction form
    193,351.73/290,041.40 = 80,918.73/x
  3. Step 3: Cross multiply
    193,351.73x = 290,041.40 × 80,918.73
  4. Step 4: Simplify right side
    193,351.73x = 23,469,781,937.72
  5. Step 5: Solve for x
    x = 23,469,781,937.72/193,351.73
  6. Step 6: Final answer
    x = 121,383.88

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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.