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Finding the Third Proportional to 325.69 and 622.13

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Solution

The third proportional to 325.69 and 622.13 is: 1,188.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.69 : 622.13 = 622.13 : x
  2. Step 2: Convert to fraction form
    325.69/622.13 = 622.13/x
  3. Step 3: Cross multiply
    325.69x = 622.13 × 622.13
  4. Step 4: Simplify right side
    325.69x = 387,039.52
  5. Step 5: Solve for x
    x = 387,039.52/325.69
  6. Step 6: Final answer
    x = 1,188.38

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Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.