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Finding the Fourth Proportional to 12,793,923.20, 19,162,891.20 and 11,114,307.20

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Solution

The fourth proportional to 12,793,923.20, 19,162,891.20 and 11,114,307.20 is: 16,647,142.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,793,923.20 : 19,162,891.20 = 11,114,307.20 : x
  2. Step 2: Convert to fraction form
    12,793,923.20/19,162,891.20 = 11,114,307.20/x
  3. Step 3: Cross multiply
    12,793,923.20x = 19,162,891.20 × 11,114,307.20
  4. Step 4: Simplify right side
    12,793,923.20x = 212,982,259,636,976.62
  5. Step 5: Solve for x
    x = 212,982,259,636,976.62/12,793,923.20
  6. Step 6: Final answer
    x = 16,647,142.26

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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.