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Finding the Fourth Proportional to 54.74, 81.99 and 44

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Solution

The fourth proportional to 54.74, 81.99 and 44 is: 65.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54.74 : 81.99 = 44 : x
  2. Step 2: Convert to fraction form
    54.74/81.99 = 44/x
  3. Step 3: Cross multiply
    54.74x = 81.99 × 44
  4. Step 4: Simplify right side
    54.74x = 3,607.56
  5. Step 5: Solve for x
    x = 3,607.56/54.74
  6. Step 6: Final answer
    x = 65.90

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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.