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Finding the Fourth Proportional to 82,063.44, 113,723.22 and 80,488.56

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Solution

The fourth proportional to 82,063.44, 113,723.22 and 80,488.56 is: 111,540.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,063.44 : 113,723.22 = 80,488.56 : x
  2. Step 2: Convert to fraction form
    82,063.44/113,723.22 = 80,488.56/x
  3. Step 3: Cross multiply
    82,063.44x = 113,723.22 × 80,488.56
  4. Step 4: Simplify right side
    82,063.44x = 9,153,418,216.36
  5. Step 5: Solve for x
    x = 9,153,418,216.36/82,063.44
  6. Step 6: Final answer
    x = 111,540.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.