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Finding the Third Proportional to 11,718 and 25,438.50

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Solution

The third proportional to 11,718 and 25,438.50 is: 55,224.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,718 : 25,438.50 = 25,438.50 : x
  2. Step 2: Convert to fraction form
    11,718/25,438.50 = 25,438.50/x
  3. Step 3: Cross multiply
    11,718x = 25,438.50 × 25,438.50
  4. Step 4: Simplify right side
    11,718x = 647,117,282.25
  5. Step 5: Solve for x
    x = 647,117,282.25/11,718
  6. Step 6: Final answer
    x = 55,224.21

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.