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Finding the Fourth Proportional to 6,388,542.89, 8,816,143.10 and 3,487,933.73

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Solution

The fourth proportional to 6,388,542.89, 8,816,143.10 and 3,487,933.73 is: 4,813,323.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,388,542.89 : 8,816,143.10 = 3,487,933.73 : x
  2. Step 2: Convert to fraction form
    6,388,542.89/8,816,143.10 = 3,487,933.73/x
  3. Step 3: Cross multiply
    6,388,542.89x = 8,816,143.10 × 3,487,933.73
  4. Step 4: Simplify right side
    6,388,542.89x = 30,750,122,886,996.76
  5. Step 5: Solve for x
    x = 30,750,122,886,996.76/6,388,542.89
  6. Step 6: Final answer
    x = 4,813,323.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.