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Finding the Third Proportional to 846 and 2,220

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Solution

The third proportional to 846 and 2,220 is: 5,825.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    846 : 2,220 = 2,220 : x
  2. Step 2: Convert to fraction form
    846/2,220 = 2,220/x
  3. Step 3: Cross multiply
    846x = 2,220 × 2,220
  4. Step 4: Simplify right side
    846x = 4,928,400
  5. Step 5: Solve for x
    x = 4,928,400/846
  6. Step 6: Final answer
    x = 5,825.53

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Why These Related Problems?

These problems maintain the same ratio (2.62) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.