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Finding the Fourth Proportional to 109.52, 151.22 and 76.82

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Solution

The fourth proportional to 109.52, 151.22 and 76.82 is: 106.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    109.52 : 151.22 = 76.82 : x
  2. Step 2: Convert to fraction form
    109.52/151.22 = 76.82/x
  3. Step 3: Cross multiply
    109.52x = 151.22 × 76.82
  4. Step 4: Simplify right side
    109.52x = 11,615.72
  5. Step 5: Solve for x
    x = 11,615.72/109.52
  6. Step 6: Final answer
    x = 106.06

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