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Finding the Third Proportional to 18,959,982.75 and 28,639,229.63

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Solution

The third proportional to 18,959,982.75 and 28,639,229.63 is: 43,259,821.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,959,982.75 : 28,639,229.63 = 28,639,229.63 : x
  2. Step 2: Convert to fraction form
    18,959,982.75/28,639,229.63 = 28,639,229.63/x
  3. Step 3: Cross multiply
    18,959,982.75x = 28,639,229.63 × 28,639,229.63
  4. Step 4: Simplify right side
    18,959,982.75x = 820,205,473,513,477.62
  5. Step 5: Solve for x
    x = 820,205,473,513,477.62/18,959,982.75
  6. Step 6: Final answer
    x = 43,259,821.72

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.