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Finding the Fourth Proportional to 161.93, 223.49 and 92

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Solution

The fourth proportional to 161.93, 223.49 and 92 is: 126.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.93 : 223.49 = 92 : x
  2. Step 2: Convert to fraction form
    161.93/223.49 = 92/x
  3. Step 3: Cross multiply
    161.93x = 223.49 × 92
  4. Step 4: Simplify right side
    161.93x = 20,561.08
  5. Step 5: Solve for x
    x = 20,561.08/161.93
  6. Step 6: Final answer
    x = 126.98

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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.