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Finding the Fourth Proportional to 192.14, 265.22 and 118.45

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Solution

The fourth proportional to 192.14, 265.22 and 118.45 is: 163.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.14 : 265.22 = 118.45 : x
  2. Step 2: Convert to fraction form
    192.14/265.22 = 118.45/x
  3. Step 3: Cross multiply
    192.14x = 265.22 × 118.45
  4. Step 4: Simplify right side
    192.14x = 31,414.67
  5. Step 5: Solve for x
    x = 31,414.67/192.14
  6. Step 6: Final answer
    x = 163.50

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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.