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Finding the Third Proportional to 7,636 and 12,114

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Solution

The third proportional to 7,636 and 12,114 is: 19,218.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,636 : 12,114 = 12,114 : x
  2. Step 2: Convert to fraction form
    7,636/12,114 = 12,114/x
  3. Step 3: Cross multiply
    7,636x = 12,114 × 12,114
  4. Step 4: Simplify right side
    7,636x = 146,748,996
  5. Step 5: Solve for x
    x = 146,748,996/7,636
  6. Step 6: Final answer
    x = 19,218.05

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.