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Finding the Fourth Proportional to 13,149,067.20, 19,723,600.80 and 13,149,067.20

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Solution

The fourth proportional to 13,149,067.20, 19,723,600.80 and 13,149,067.20 is: 19,723,600.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149,067.20 : 19,723,600.80 = 13,149,067.20 : x
  2. Step 2: Convert to fraction form
    13,149,067.20/19,723,600.80 = 13,149,067.20/x
  3. Step 3: Cross multiply
    13,149,067.20x = 19,723,600.80 × 13,149,067.20
  4. Step 4: Simplify right side
    13,149,067.20x = 259,346,952,345,173.75
  5. Step 5: Solve for x
    x = 259,346,952,345,173.75/13,149,067.20
  6. Step 6: Final answer
    x = 19,723,600.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.