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Finding the Fourth Proportional to 196.13, 270.70 and 133.97

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Solution

The fourth proportional to 196.13, 270.70 and 133.97 is: 184.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.13 : 270.70 = 133.97 : x
  2. Step 2: Convert to fraction form
    196.13/270.70 = 133.97/x
  3. Step 3: Cross multiply
    196.13x = 270.70 × 133.97
  4. Step 4: Simplify right side
    196.13x = 36,265.68
  5. Step 5: Solve for x
    x = 36,265.68/196.13
  6. Step 6: Final answer
    x = 184.91

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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.