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Finding the Third Proportional to 8,407.13 and 13,187.81

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Solution

The third proportional to 8,407.13 and 13,187.81 is: 20,687.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,407.13 : 13,187.81 = 13,187.81 : x
  2. Step 2: Convert to fraction form
    8,407.13/13,187.81 = 13,187.81/x
  3. Step 3: Cross multiply
    8,407.13x = 13,187.81 × 13,187.81
  4. Step 4: Simplify right side
    8,407.13x = 173,918,398.54
  5. Step 5: Solve for x
    x = 173,918,398.54/8,407.13
  6. Step 6: Final answer
    x = 20,687.02

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These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.