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Finding the Third Proportional to 26,289 and 56,790

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Solution

The third proportional to 26,289 and 56,790 is: 122,678.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,289 : 56,790 = 56,790 : x
  2. Step 2: Convert to fraction form
    26,289/56,790 = 56,790/x
  3. Step 3: Cross multiply
    26,289x = 56,790 × 56,790
  4. Step 4: Simplify right side
    26,289x = 3,225,104,100
  5. Step 5: Solve for x
    x = 3,225,104,100/26,289
  6. Step 6: Final answer
    x = 122,678.84

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.