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Finding the Fourth Proportional to 116, 173.76 and 88.96

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Solution

The fourth proportional to 116, 173.76 and 88.96 is: 133.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    116 : 173.76 = 88.96 : x
  2. Step 2: Convert to fraction form
    116/173.76 = 88.96/x
  3. Step 3: Cross multiply
    116x = 173.76 × 88.96
  4. Step 4: Simplify right side
    116x = 15,457.69
  5. Step 5: Solve for x
    x = 15,457.69/116
  6. Step 6: Final answer
    x = 133.26

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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.