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Finding the Fourth Proportional to 140,091.80, 193,341.57 and 85,675.80

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Solution

The fourth proportional to 140,091.80, 193,341.57 and 85,675.80 is: 118,241.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,091.80 : 193,341.57 = 85,675.80 : x
  2. Step 2: Convert to fraction form
    140,091.80/193,341.57 = 85,675.80/x
  3. Step 3: Cross multiply
    140,091.80x = 193,341.57 × 85,675.80
  4. Step 4: Simplify right side
    140,091.80x = 16,564,694,245.97
  5. Step 5: Solve for x
    x = 16,564,694,245.97/140,091.80
  6. Step 6: Final answer
    x = 118,241.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.