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Finding the Fourth Proportional to 11,842,647.78, 17,764,605.90 and 3,756,236.88

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Solution

The fourth proportional to 11,842,647.78, 17,764,605.90 and 3,756,236.88 is: 5,634,556.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,842,647.78 : 17,764,605.90 = 3,756,236.88 : x
  2. Step 2: Convert to fraction form
    11,842,647.78/17,764,605.90 = 3,756,236.88/x
  3. Step 3: Cross multiply
    11,842,647.78x = 17,764,605.90 × 3,756,236.88
  4. Step 4: Simplify right side
    11,842,647.78x = 66,728,067,840,245.59
  5. Step 5: Solve for x
    x = 66,728,067,840,245.59/11,842,647.78
  6. Step 6: Final answer
    x = 5,634,556.48

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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.