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Finding the Third Proportional to 468 and 786.50

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Solution

The third proportional to 468 and 786.50 is: 1,321.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    468 : 786.50 = 786.50 : x
  2. Step 2: Convert to fraction form
    468/786.50 = 786.50/x
  3. Step 3: Cross multiply
    468x = 786.50 × 786.50
  4. Step 4: Simplify right side
    468x = 618,582.25
  5. Step 5: Solve for x
    x = 618,582.25/468
  6. Step 6: Final answer
    x = 1,321.76

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Why These Related Problems?

These problems maintain the same ratio (1.68) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.