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Finding the Fourth Proportional to 139,449.44, 192,441.60 and 82,849.88

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Solution

The fourth proportional to 139,449.44, 192,441.60 and 82,849.88 is: 114,333.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,449.44 : 192,441.60 = 82,849.88 : x
  2. Step 2: Convert to fraction form
    139,449.44/192,441.60 = 82,849.88/x
  3. Step 3: Cross multiply
    139,449.44x = 192,441.60 × 82,849.88
  4. Step 4: Simplify right side
    139,449.44x = 15,943,762,504.80
  5. Step 5: Solve for x
    x = 15,943,762,504.80/139,449.44
  6. Step 6: Final answer
    x = 114,333.65

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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.