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Finding the Fourth Proportional to 324.50, 486.59 and 108

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Solution

The fourth proportional to 324.50, 486.59 and 108 is: 161.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.50 : 486.59 = 108 : x
  2. Step 2: Convert to fraction form
    324.50/486.59 = 108/x
  3. Step 3: Cross multiply
    324.50x = 486.59 × 108
  4. Step 4: Simplify right side
    324.50x = 52,551.18
  5. Step 5: Solve for x
    x = 52,551.18/324.50
  6. Step 6: Final answer
    x = 161.95

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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.