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Finding the Fourth Proportional to 81,993.16, 122,912.86 and 44,498.28

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Solution

The fourth proportional to 81,993.16, 122,912.86 and 44,498.28 is: 66,705.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,993.16 : 122,912.86 = 44,498.28 : x
  2. Step 2: Convert to fraction form
    81,993.16/122,912.86 = 44,498.28/x
  3. Step 3: Cross multiply
    81,993.16x = 122,912.86 × 44,498.28
  4. Step 4: Simplify right side
    81,993.16x = 5,469,410,859.88
  5. Step 5: Solve for x
    x = 5,469,410,859.88/81,993.16
  6. Step 6: Final answer
    x = 66,705.70

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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.