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Finding the Third Proportional to 27,420 and 56,788

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Solution

The third proportional to 27,420 and 56,788 is: 117,610.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,420 : 56,788 = 56,788 : x
  2. Step 2: Convert to fraction form
    27,420/56,788 = 56,788/x
  3. Step 3: Cross multiply
    27,420x = 56,788 × 56,788
  4. Step 4: Simplify right side
    27,420x = 3,224,876,944
  5. Step 5: Solve for x
    x = 3,224,876,944/27,420
  6. Step 6: Final answer
    x = 117,610.39

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.