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Finding the Fourth Proportional to 13,937,605.20, 20,906,407.80 and 11,067,823.80

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Solution

The fourth proportional to 13,937,605.20, 20,906,407.80 and 11,067,823.80 is: 16,601,735.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,937,605.20 : 20,906,407.80 = 11,067,823.80 : x
  2. Step 2: Convert to fraction form
    13,937,605.20/20,906,407.80 = 11,067,823.80/x
  3. Step 3: Cross multiply
    13,937,605.20x = 20,906,407.80 × 11,067,823.80
  4. Step 4: Simplify right side
    13,937,605.20x = 231,388,437,821,345.66
  5. Step 5: Solve for x
    x = 231,388,437,821,345.66/13,937,605.20
  6. Step 6: Final answer
    x = 16,601,735.70

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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.