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Finding the Fourth Proportional to 233.76, 349.96 and 165

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Solution

The fourth proportional to 233.76, 349.96 and 165 is: 247.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.76 : 349.96 = 165 : x
  2. Step 2: Convert to fraction form
    233.76/349.96 = 165/x
  3. Step 3: Cross multiply
    233.76x = 349.96 × 165
  4. Step 4: Simplify right side
    233.76x = 57,743.40
  5. Step 5: Solve for x
    x = 57,743.40/233.76
  6. Step 6: Final answer
    x = 247.02

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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.