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Finding the Fourth Proportional to 115,846.80, 173,472.12 and 80,257.56

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Solution

The fourth proportional to 115,846.80, 173,472.12 and 80,257.56 is: 120,179.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,846.80 : 173,472.12 = 80,257.56 : x
  2. Step 2: Convert to fraction form
    115,846.80/173,472.12 = 80,257.56/x
  3. Step 3: Cross multiply
    115,846.80x = 173,472.12 × 80,257.56
  4. Step 4: Simplify right side
    115,846.80x = 13,922,449,079.23
  5. Step 5: Solve for x
    x = 13,922,449,079.23/115,846.80
  6. Step 6: Final answer
    x = 120,179.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.