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Finding the Third Proportional to 30,744 and 66,331.13

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Solution

The third proportional to 30,744 and 66,331.13 is: 143,111.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,744 : 66,331.13 = 66,331.13 : x
  2. Step 2: Convert to fraction form
    30,744/66,331.13 = 66,331.13/x
  3. Step 3: Cross multiply
    30,744x = 66,331.13 × 66,331.13
  4. Step 4: Simplify right side
    30,744x = 4,399,818,143.77
  5. Step 5: Solve for x
    x = 4,399,818,143.77/30,744
  6. Step 6: Final answer
    x = 143,111.44

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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.