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Finding the Third Proportional to 3,231.13 and 6,978.06

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Solution

The third proportional to 3,231.13 and 6,978.06 is: 15,070.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,231.13 : 6,978.06 = 6,978.06 : x
  2. Step 2: Convert to fraction form
    3,231.13/6,978.06 = 6,978.06/x
  3. Step 3: Cross multiply
    3,231.13x = 6,978.06 × 6,978.06
  4. Step 4: Simplify right side
    3,231.13x = 48,693,356.25
  5. Step 5: Solve for x
    x = 48,693,356.25/3,231.13
  6. Step 6: Final answer
    x = 15,070.09

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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.