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Finding the Fourth Proportional to 23,216.80, 34,786.80 and 19,760.80

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Solution

The fourth proportional to 23,216.80, 34,786.80 and 19,760.80 is: 29,608.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,216.80 : 34,786.80 = 19,760.80 : x
  2. Step 2: Convert to fraction form
    23,216.80/34,786.80 = 19,760.80/x
  3. Step 3: Cross multiply
    23,216.80x = 34,786.80 × 19,760.80
  4. Step 4: Simplify right side
    23,216.80x = 687,414,997.44
  5. Step 5: Solve for x
    x = 687,414,997.44/23,216.80
  6. Step 6: Final answer
    x = 29,608.52

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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.