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Finding the Third Proportional to 792.50 and 1,023.75

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Solution

The third proportional to 792.50 and 1,023.75 is: 1,322.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    792.50 : 1,023.75 = 1,023.75 : x
  2. Step 2: Convert to fraction form
    792.50/1,023.75 = 1,023.75/x
  3. Step 3: Cross multiply
    792.50x = 1,023.75 × 1,023.75
  4. Step 4: Simplify right side
    792.50x = 1,048,064.06
  5. Step 5: Solve for x
    x = 1,048,064.06/792.50
  6. Step 6: Final answer
    x = 1,322.48

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Why These Related Problems?

These problems maintain the same ratio (1.29) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.