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Finding the Third Proportional to 8,516,512.55 and 18,681,843.80

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Solution

The third proportional to 8,516,512.55 and 18,681,843.80 is: 40,980,540.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,516,512.55 : 18,681,843.80 = 18,681,843.80 : x
  2. Step 2: Convert to fraction form
    8,516,512.55/18,681,843.80 = 18,681,843.80/x
  3. Step 3: Cross multiply
    8,516,512.55x = 18,681,843.80 × 18,681,843.80
  4. Step 4: Simplify right side
    8,516,512.55x = 349,011,287,650,836.94
  5. Step 5: Solve for x
    x = 349,011,287,650,836.94/8,516,512.55
  6. Step 6: Final answer
    x = 40,980,540.54

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.