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Finding the Fourth Proportional to 116, 173.92 and 61.92

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Solution

The fourth proportional to 116, 173.92 and 61.92 is: 92.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    116 : 173.92 = 61.92 : x
  2. Step 2: Convert to fraction form
    116/173.92 = 61.92/x
  3. Step 3: Cross multiply
    116x = 173.92 × 61.92
  4. Step 4: Simplify right side
    116x = 10,769.13
  5. Step 5: Solve for x
    x = 10,769.13/116
  6. Step 6: Final answer
    x = 92.84

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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.