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Finding the Fourth Proportional to 192.22, 265.23 and 113.56

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Solution

The fourth proportional to 192.22, 265.23 and 113.56 is: 156.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.22 : 265.23 = 113.56 : x
  2. Step 2: Convert to fraction form
    192.22/265.23 = 113.56/x
  3. Step 3: Cross multiply
    192.22x = 265.23 × 113.56
  4. Step 4: Simplify right side
    192.22x = 30,119.52
  5. Step 5: Solve for x
    x = 30,119.52/192.22
  6. Step 6: Final answer
    x = 156.69

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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.