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Finding the Third Proportional to 493 and 622.50

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Solution

The third proportional to 493 and 622.50 is: 786.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    493 : 622.50 = 622.50 : x
  2. Step 2: Convert to fraction form
    493/622.50 = 622.50/x
  3. Step 3: Cross multiply
    493x = 622.50 × 622.50
  4. Step 4: Simplify right side
    493x = 387,506.25
  5. Step 5: Solve for x
    x = 387,506.25/493
  6. Step 6: Final answer
    x = 786.02

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These problems maintain the same ratio (1.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.