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Finding the Third Proportional to 11,781.74 and 25,636.64

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Solution

The third proportional to 11,781.74 and 25,636.64 is: 55,784.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,781.74 : 25,636.64 = 25,636.64 : x
  2. Step 2: Convert to fraction form
    11,781.74/25,636.64 = 25,636.64/x
  3. Step 3: Cross multiply
    11,781.74x = 25,636.64 × 25,636.64
  4. Step 4: Simplify right side
    11,781.74x = 657,237,342.54
  5. Step 5: Solve for x
    x = 657,237,342.54/11,781.74
  6. Step 6: Final answer
    x = 55,784.41

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.