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Finding the Third Proportional to 8,656.31 and 18,605.75

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Solution

The third proportional to 8,656.31 and 18,605.75 is: 39,990.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,656.31 : 18,605.75 = 18,605.75 : x
  2. Step 2: Convert to fraction form
    8,656.31/18,605.75 = 18,605.75/x
  3. Step 3: Cross multiply
    8,656.31x = 18,605.75 × 18,605.75
  4. Step 4: Simplify right side
    8,656.31x = 346,173,933.06
  5. Step 5: Solve for x
    x = 346,173,933.06/8,656.31
  6. Step 6: Final answer
    x = 39,990.92

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These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.