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Finding the Fourth Proportional to 197.54, 272.56 and 132

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Solution

The fourth proportional to 197.54, 272.56 and 132 is: 182.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.54 : 272.56 = 132 : x
  2. Step 2: Convert to fraction form
    197.54/272.56 = 132/x
  3. Step 3: Cross multiply
    197.54x = 272.56 × 132
  4. Step 4: Simplify right side
    197.54x = 35,977.92
  5. Step 5: Solve for x
    x = 35,977.92/197.54
  6. Step 6: Final answer
    x = 182.13

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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.