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Finding the Fourth Proportional to 117.44, 176.16 and 104.66

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Solution

The fourth proportional to 117.44, 176.16 and 104.66 is: 156.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.44 : 176.16 = 104.66 : x
  2. Step 2: Convert to fraction form
    117.44/176.16 = 104.66/x
  3. Step 3: Cross multiply
    117.44x = 176.16 × 104.66
  4. Step 4: Simplify right side
    117.44x = 18,436.91
  5. Step 5: Solve for x
    x = 18,436.91/117.44
  6. Step 6: Final answer
    x = 156.99

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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.