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Finding the Fourth Proportional to 13,361,721.60, 20,042,486.40 and 3,264,249.60

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Solution

The fourth proportional to 13,361,721.60, 20,042,486.40 and 3,264,249.60 is: 4,896,350.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,361,721.60 : 20,042,486.40 = 3,264,249.60 : x
  2. Step 2: Convert to fraction form
    13,361,721.60/20,042,486.40 = 3,264,249.60/x
  3. Step 3: Cross multiply
    13,361,721.60x = 20,042,486.40 × 3,264,249.60
  4. Step 4: Simplify right side
    13,361,721.60x = 65,423,678,214,205.44
  5. Step 5: Solve for x
    x = 65,423,678,214,205.44/13,361,721.60
  6. Step 6: Final answer
    x = 4,896,350.95

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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.