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Finding the Fourth Proportional to 13,752,728.40, 20,623,843.80 and 4,164,920.40

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Solution

The fourth proportional to 13,752,728.40, 20,623,843.80 and 4,164,920.40 is: 6,245,791.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,752,728.40 : 20,623,843.80 = 4,164,920.40 : x
  2. Step 2: Convert to fraction form
    13,752,728.40/20,623,843.80 = 4,164,920.40/x
  3. Step 3: Cross multiply
    13,752,728.40x = 20,623,843.80 × 4,164,920.40
  4. Step 4: Simplify right side
    13,752,728.40x = 85,896,667,769,033.52
  5. Step 5: Solve for x
    x = 85,896,667,769,033.52/13,752,728.40
  6. Step 6: Final answer
    x = 6,245,791.04

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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.