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Finding the Third Proportional to 845 and 2,195

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Solution

The third proportional to 845 and 2,195 is: 5,701.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    845 : 2,195 = 2,195 : x
  2. Step 2: Convert to fraction form
    845/2,195 = 2,195/x
  3. Step 3: Cross multiply
    845x = 2,195 × 2,195
  4. Step 4: Simplify right side
    845x = 4,818,025
  5. Step 5: Solve for x
    x = 4,818,025/845
  6. Step 6: Final answer
    x = 5,701.80

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Why These Related Problems?

These problems maintain the same ratio (2.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.