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Finding the Third Proportional to 2,642 and 7,113

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Solution

The third proportional to 2,642 and 7,113 is: 19,150.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,642 : 7,113 = 7,113 : x
  2. Step 2: Convert to fraction form
    2,642/7,113 = 7,113/x
  3. Step 3: Cross multiply
    2,642x = 7,113 × 7,113
  4. Step 4: Simplify right side
    2,642x = 50,594,769
  5. Step 5: Solve for x
    x = 50,594,769/2,642
  6. Step 6: Final answer
    x = 19,150.18

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Why These Related Problems?

These problems maintain the same ratio (2.69) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.