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Finding the Fourth Proportional to 34.66, 52.01 and 11.86

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Solution

The fourth proportional to 34.66, 52.01 and 11.86 is: 17.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    34.66 : 52.01 = 11.86 : x
  2. Step 2: Convert to fraction form
    34.66/52.01 = 11.86/x
  3. Step 3: Cross multiply
    34.66x = 52.01 × 11.86
  4. Step 4: Simplify right side
    34.66x = 616.52
  5. Step 5: Solve for x
    x = 616.52/34.66
  6. Step 6: Final answer
    x = 17.79

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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.