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Finding the Fourth Proportional to 26,533.80, 39,787.97 and 12,481.97

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Solution

The fourth proportional to 26,533.80, 39,787.97 and 12,481.97 is: 18,716.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,533.80 : 39,787.97 = 12,481.97 : x
  2. Step 2: Convert to fraction form
    26,533.80/39,787.97 = 12,481.97/x
  3. Step 3: Cross multiply
    26,533.80x = 39,787.97 × 12,481.97
  4. Step 4: Simplify right side
    26,533.80x = 496,631,986.55
  5. Step 5: Solve for x
    x = 496,631,986.55/26,533.80
  6. Step 6: Final answer
    x = 18,716.96

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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.