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Finding the Fourth Proportional to 79,768.92, 110,081.30 and 43,470.64

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Solution

The fourth proportional to 79,768.92, 110,081.30 and 43,470.64 is: 59,989.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,768.92 : 110,081.30 = 43,470.64 : x
  2. Step 2: Convert to fraction form
    79,768.92/110,081.30 = 43,470.64/x
  3. Step 3: Cross multiply
    79,768.92x = 110,081.30 × 43,470.64
  4. Step 4: Simplify right side
    79,768.92x = 4,785,304,563.03
  5. Step 5: Solve for x
    x = 4,785,304,563.03/79,768.92
  6. Step 6: Final answer
    x = 59,989.59

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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.