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Finding the Third Proportional to 325.75 and 788.50

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Solution

The third proportional to 325.75 and 788.50 is: 1,908.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.75 : 788.50 = 788.50 : x
  2. Step 2: Convert to fraction form
    325.75/788.50 = 788.50/x
  3. Step 3: Cross multiply
    325.75x = 788.50 × 788.50
  4. Step 4: Simplify right side
    325.75x = 621,732.25
  5. Step 5: Solve for x
    x = 621,732.25/325.75
  6. Step 6: Final answer
    x = 1,908.62

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Why These Related Problems?

These problems maintain the same ratio (2.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.