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Finding the Third Proportional to 10,039.50 and 21,717

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Solution

The third proportional to 10,039.50 and 21,717 is: 46,977.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,039.50 : 21,717 = 21,717 : x
  2. Step 2: Convert to fraction form
    10,039.50/21,717 = 21,717/x
  3. Step 3: Cross multiply
    10,039.50x = 21,717 × 21,717
  4. Step 4: Simplify right side
    10,039.50x = 471,628,089
  5. Step 5: Solve for x
    x = 471,628,089/10,039.50
  6. Step 6: Final answer
    x = 46,977.25

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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.