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Finding the Fourth Proportional to 122.26, 183.24 and 58

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Solution

The fourth proportional to 122.26, 183.24 and 58 is: 86.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.26 : 183.24 = 58 : x
  2. Step 2: Convert to fraction form
    122.26/183.24 = 58/x
  3. Step 3: Cross multiply
    122.26x = 183.24 × 58
  4. Step 4: Simplify right side
    122.26x = 10,627.92
  5. Step 5: Solve for x
    x = 10,627.92/122.26
  6. Step 6: Final answer
    x = 86.93

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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.