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Finding the Fourth Proportional to 192.62, 265.91 and 113.96

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Solution

The fourth proportional to 192.62, 265.91 and 113.96 is: 157.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.62 : 265.91 = 113.96 : x
  2. Step 2: Convert to fraction form
    192.62/265.91 = 113.96/x
  3. Step 3: Cross multiply
    192.62x = 265.91 × 113.96
  4. Step 4: Simplify right side
    192.62x = 30,301.20
  5. Step 5: Solve for x
    x = 30,301.20/192.62
  6. Step 6: Final answer
    x = 157.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.