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Finding the Fourth Proportional to 79,193.32, 109,286.78 and 43,382.56

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Solution

The fourth proportional to 79,193.32, 109,286.78 and 43,382.56 is: 59,867.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,193.32 : 109,286.78 = 43,382.56 : x
  2. Step 2: Convert to fraction form
    79,193.32/109,286.78 = 43,382.56/x
  3. Step 3: Cross multiply
    79,193.32x = 109,286.78 × 43,382.56
  4. Step 4: Simplify right side
    79,193.32x = 4,741,140,617.74
  5. Step 5: Solve for x
    x = 4,741,140,617.74/79,193.32
  6. Step 6: Final answer
    x = 59,867.94

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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.