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Finding the Third Proportional to 12,620.81 and 20,093.06

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Solution

The third proportional to 12,620.81 and 20,093.06 is: 31,989.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,620.81 : 20,093.06 = 20,093.06 : x
  2. Step 2: Convert to fraction form
    12,620.81/20,093.06 = 20,093.06/x
  3. Step 3: Cross multiply
    12,620.81x = 20,093.06 × 20,093.06
  4. Step 4: Simplify right side
    12,620.81x = 403,731,160.63
  5. Step 5: Solve for x
    x = 403,731,160.63/12,620.81
  6. Step 6: Final answer
    x = 31,989.32

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.