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Finding the Third Proportional to 5,489 and 12,028

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Solution

The third proportional to 5,489 and 12,028 is: 26,356.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,489 : 12,028 = 12,028 : x
  2. Step 2: Convert to fraction form
    5,489/12,028 = 12,028/x
  3. Step 3: Cross multiply
    5,489x = 12,028 × 12,028
  4. Step 4: Simplify right side
    5,489x = 144,672,784
  5. Step 5: Solve for x
    x = 144,672,784/5,489
  6. Step 6: Final answer
    x = 26,356.86

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.