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Finding the Third Proportional to 1,185 and 1,266

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Solution

The third proportional to 1,185 and 1,266 is: 1,352.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185 : 1,266 = 1,266 : x
  2. Step 2: Convert to fraction form
    1,185/1,266 = 1,266/x
  3. Step 3: Cross multiply
    1,185x = 1,266 × 1,266
  4. Step 4: Simplify right side
    1,185x = 1,602,756
  5. Step 5: Solve for x
    x = 1,602,756/1,185
  6. Step 6: Final answer
    x = 1,352.54

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Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.