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Finding the Fourth Proportional to 116, 173.99 and 58.20

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Solution

The fourth proportional to 116, 173.99 and 58.20 is: 87.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    116 : 173.99 = 58.20 : x
  2. Step 2: Convert to fraction form
    116/173.99 = 58.20/x
  3. Step 3: Cross multiply
    116x = 173.99 × 58.20
  4. Step 4: Simplify right side
    116x = 10,126.22
  5. Step 5: Solve for x
    x = 10,126.22/116
  6. Step 6: Final answer
    x = 87.29

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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.