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Finding the Fourth Proportional to 80,997.84, 111,704.34 and 50,786.46

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Solution

The fourth proportional to 80,997.84, 111,704.34 and 50,786.46 is: 70,039.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,997.84 : 111,704.34 = 50,786.46 : x
  2. Step 2: Convert to fraction form
    80,997.84/111,704.34 = 50,786.46/x
  3. Step 3: Cross multiply
    80,997.84x = 111,704.34 × 50,786.46
  4. Step 4: Simplify right side
    80,997.84x = 5,673,067,995.24
  5. Step 5: Solve for x
    x = 5,673,067,995.24/80,997.84
  6. Step 6: Final answer
    x = 70,039.74

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1.5x scale

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.