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Finding the Fourth Proportional to 238, 357.24 and 166

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Solution

The fourth proportional to 238, 357.24 and 166 is: 249.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    238 : 357.24 = 166 : x
  2. Step 2: Convert to fraction form
    238/357.24 = 166/x
  3. Step 3: Cross multiply
    238x = 357.24 × 166
  4. Step 4: Simplify right side
    238x = 59,301.84
  5. Step 5: Solve for x
    x = 59,301.84/238
  6. Step 6: Final answer
    x = 249.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.