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Finding the Fourth Proportional to 113, 169.46 and 44.48

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Solution

The fourth proportional to 113, 169.46 and 44.48 is: 66.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    113 : 169.46 = 44.48 : x
  2. Step 2: Convert to fraction form
    113/169.46 = 44.48/x
  3. Step 3: Cross multiply
    113x = 169.46 × 44.48
  4. Step 4: Simplify right side
    113x = 7,537.58
  5. Step 5: Solve for x
    x = 7,537.58/113
  6. Step 6: Final answer
    x = 66.70

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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.