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Finding the Third Proportional to 793.50 and 1,272

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Solution

The third proportional to 793.50 and 1,272 is: 2,039.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.50 : 1,272 = 1,272 : x
  2. Step 2: Convert to fraction form
    793.50/1,272 = 1,272/x
  3. Step 3: Cross multiply
    793.50x = 1,272 × 1,272
  4. Step 4: Simplify right side
    793.50x = 1,617,984
  5. Step 5: Solve for x
    x = 1,617,984/793.50
  6. Step 6: Final answer
    x = 2,039.05

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.