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Finding the Fourth Proportional to 235.34, 352.74 and 107.18

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Solution

The fourth proportional to 235.34, 352.74 and 107.18 is: 160.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.34 : 352.74 = 107.18 : x
  2. Step 2: Convert to fraction form
    235.34/352.74 = 107.18/x
  3. Step 3: Cross multiply
    235.34x = 352.74 × 107.18
  4. Step 4: Simplify right side
    235.34x = 37,806.67
  5. Step 5: Solve for x
    x = 37,806.67/235.34
  6. Step 6: Final answer
    x = 160.65

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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.