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Finding the Fourth Proportional to 192.60, 265.79 and 118.95

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Solution

The fourth proportional to 192.60, 265.79 and 118.95 is: 164.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.60 : 265.79 = 118.95 : x
  2. Step 2: Convert to fraction form
    192.60/265.79 = 118.95/x
  3. Step 3: Cross multiply
    192.60x = 265.79 × 118.95
  4. Step 4: Simplify right side
    192.60x = 31,615.72
  5. Step 5: Solve for x
    x = 31,615.72/192.60
  6. Step 6: Final answer
    x = 164.15

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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.