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Finding the Fourth Proportional to 192.17, 265.15 and 113.44

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Solution

The fourth proportional to 192.17, 265.15 and 113.44 is: 156.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.17 : 265.15 = 113.44 : x
  2. Step 2: Convert to fraction form
    192.17/265.15 = 113.44/x
  3. Step 3: Cross multiply
    192.17x = 265.15 × 113.44
  4. Step 4: Simplify right side
    192.17x = 30,079.58
  5. Step 5: Solve for x
    x = 30,079.58/192.17
  6. Step 6: Final answer
    x = 156.53

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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.