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Finding the Third Proportional to 13,056.75 and 21,021.75

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Solution

The third proportional to 13,056.75 and 21,021.75 is: 33,845.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,056.75 : 21,021.75 = 21,021.75 : x
  2. Step 2: Convert to fraction form
    13,056.75/21,021.75 = 21,021.75/x
  3. Step 3: Cross multiply
    13,056.75x = 21,021.75 × 21,021.75
  4. Step 4: Simplify right side
    13,056.75x = 441,913,973.06
  5. Step 5: Solve for x
    x = 441,913,973.06/13,056.75
  6. Step 6: Final answer
    x = 33,845.63

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.