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Finding the Fourth Proportional to 235.12, 352.59 and 113.44

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Solution

The fourth proportional to 235.12, 352.59 and 113.44 is: 170.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.12 : 352.59 = 113.44 : x
  2. Step 2: Convert to fraction form
    235.12/352.59 = 113.44/x
  3. Step 3: Cross multiply
    235.12x = 352.59 × 113.44
  4. Step 4: Simplify right side
    235.12x = 39,997.81
  5. Step 5: Solve for x
    x = 39,997.81/235.12
  6. Step 6: Final answer
    x = 170.12

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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.