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Finding the Fourth Proportional to 49.44, 74.11 and 16.91

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Solution

The fourth proportional to 49.44, 74.11 and 16.91 is: 25.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.44 : 74.11 = 16.91 : x
  2. Step 2: Convert to fraction form
    49.44/74.11 = 16.91/x
  3. Step 3: Cross multiply
    49.44x = 74.11 × 16.91
  4. Step 4: Simplify right side
    49.44x = 1,253.39
  5. Step 5: Solve for x
    x = 1,253.39/49.44
  6. Step 6: Final answer
    x = 25.35

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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.