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Finding the Fourth Proportional to 31.27, 46.95 and 16.11

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Solution

The fourth proportional to 31.27, 46.95 and 16.11 is: 24.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31.27 : 46.95 = 16.11 : x
  2. Step 2: Convert to fraction form
    31.27/46.95 = 16.11/x
  3. Step 3: Cross multiply
    31.27x = 46.95 × 16.11
  4. Step 4: Simplify right side
    31.27x = 756.36
  5. Step 5: Solve for x
    x = 756.36/31.27
  6. Step 6: Final answer
    x = 24.19

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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.