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Finding the Third Proportional to 4,162 and 9,140

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Solution

The third proportional to 4,162 and 9,140 is: 20,071.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,162 : 9,140 = 9,140 : x
  2. Step 2: Convert to fraction form
    4,162/9,140 = 9,140/x
  3. Step 3: Cross multiply
    4,162x = 9,140 × 9,140
  4. Step 4: Simplify right side
    4,162x = 83,539,600
  5. Step 5: Solve for x
    x = 83,539,600/4,162
  6. Step 6: Final answer
    x = 20,071.98

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.