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Finding the Fourth Proportional to 33.92, 46.84 and 31.48

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Solution

The fourth proportional to 33.92, 46.84 and 31.48 is: 43.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    33.92 : 46.84 = 31.48 : x
  2. Step 2: Convert to fraction form
    33.92/46.84 = 31.48/x
  3. Step 3: Cross multiply
    33.92x = 46.84 × 31.48
  4. Step 4: Simplify right side
    33.92x = 1,474.52
  5. Step 5: Solve for x
    x = 1,474.52/33.92
  6. Step 6: Final answer
    x = 43.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.