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Finding the Fourth Proportional to 192.74, 265.91 and 118.93

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Solution

The fourth proportional to 192.74, 265.91 and 118.93 is: 164.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.74 : 265.91 = 118.93 : x
  2. Step 2: Convert to fraction form
    192.74/265.91 = 118.93/x
  3. Step 3: Cross multiply
    192.74x = 265.91 × 118.93
  4. Step 4: Simplify right side
    192.74x = 31,623.42
  5. Step 5: Solve for x
    x = 31,623.42/192.74
  6. Step 6: Final answer
    x = 164.07

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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.