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Finding the Fourth Proportional to 12,798,766.80, 19,198,150.20 and 11,958,958.80

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Solution

The fourth proportional to 12,798,766.80, 19,198,150.20 and 11,958,958.80 is: 17,938,438.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,798,766.80 : 19,198,150.20 = 11,958,958.80 : x
  2. Step 2: Convert to fraction form
    12,798,766.80/19,198,150.20 = 11,958,958.80/x
  3. Step 3: Cross multiply
    12,798,766.80x = 19,198,150.20 × 11,958,958.80
  4. Step 4: Simplify right side
    12,798,766.80x = 229,589,887,278,011.75
  5. Step 5: Solve for x
    x = 229,589,887,278,011.75/12,798,766.80
  6. Step 6: Final answer
    x = 17,938,438.20

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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.