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Finding the Third Proportional to 21,709 and 44,570

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Solution

The third proportional to 21,709 and 44,570 is: 91,505.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,709 : 44,570 = 44,570 : x
  2. Step 2: Convert to fraction form
    21,709/44,570 = 44,570/x
  3. Step 3: Cross multiply
    21,709x = 44,570 × 44,570
  4. Step 4: Simplify right side
    21,709x = 1,986,484,900
  5. Step 5: Solve for x
    x = 1,986,484,900/21,709
  6. Step 6: Final answer
    x = 91,505.13

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.