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Finding the Third Proportional to 792 and 1,218.94

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Solution

The third proportional to 792 and 1,218.94 is: 1,876.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    792 : 1,218.94 = 1,218.94 : x
  2. Step 2: Convert to fraction form
    792/1,218.94 = 1,218.94/x
  3. Step 3: Cross multiply
    792x = 1,218.94 × 1,218.94
  4. Step 4: Simplify right side
    792x = 1,485,808.63
  5. Step 5: Solve for x
    x = 1,485,808.63/792
  6. Step 6: Final answer
    x = 1,876.02

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.