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Finding the Third Proportional to 792.50 and 1,657

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Solution

The third proportional to 792.50 and 1,657 is: 3,464.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    792.50 : 1,657 = 1,657 : x
  2. Step 2: Convert to fraction form
    792.50/1,657 = 1,657/x
  3. Step 3: Cross multiply
    792.50x = 1,657 × 1,657
  4. Step 4: Simplify right side
    792.50x = 2,745,649
  5. Step 5: Solve for x
    x = 2,745,649/792.50
  6. Step 6: Final answer
    x = 3,464.54

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.