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Finding the Third Proportional to 788.25 and 1,254

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Solution

The third proportional to 788.25 and 1,254 is: 1,994.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    788.25 : 1,254 = 1,254 : x
  2. Step 2: Convert to fraction form
    788.25/1,254 = 1,254/x
  3. Step 3: Cross multiply
    788.25x = 1,254 × 1,254
  4. Step 4: Simplify right side
    788.25x = 1,572,516
  5. Step 5: Solve for x
    x = 1,572,516/788.25
  6. Step 6: Final answer
    x = 1,994.95

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.