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Finding the Fourth Proportional to 117.54, 176.38 and 44.43

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Solution

The fourth proportional to 117.54, 176.38 and 44.43 is: 66.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.54 : 176.38 = 44.43 : x
  2. Step 2: Convert to fraction form
    117.54/176.38 = 44.43/x
  3. Step 3: Cross multiply
    117.54x = 176.38 × 44.43
  4. Step 4: Simplify right side
    117.54x = 7,836.56
  5. Step 5: Solve for x
    x = 7,836.56/117.54
  6. Step 6: Final answer
    x = 66.67

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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.