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Finding the Fourth Proportional to 140,086.75, 193,325.11 and 79,662.84

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Solution

The fourth proportional to 140,086.75, 193,325.11 and 79,662.84 is: 109,937.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,086.75 : 193,325.11 = 79,662.84 : x
  2. Step 2: Convert to fraction form
    140,086.75/193,325.11 = 79,662.84/x
  3. Step 3: Cross multiply
    140,086.75x = 193,325.11 × 79,662.84
  4. Step 4: Simplify right side
    140,086.75x = 15,400,827,305.91
  5. Step 5: Solve for x
    x = 15,400,827,305.91/140,086.75
  6. Step 6: Final answer
    x = 109,937.79

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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.