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Finding the Fourth Proportional to 5,285,998.80, 7,928,998.20 and 3,691,675.80

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Solution

The fourth proportional to 5,285,998.80, 7,928,998.20 and 3,691,675.80 is: 5,537,513.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285,998.80 : 7,928,998.20 = 3,691,675.80 : x
  2. Step 2: Convert to fraction form
    5,285,998.80/7,928,998.20 = 3,691,675.80/x
  3. Step 3: Cross multiply
    5,285,998.80x = 7,928,998.20 × 3,691,675.80
  4. Step 4: Simplify right side
    5,285,998.80x = 29,271,290,773,183.56
  5. Step 5: Solve for x
    x = 29,271,290,773,183.56/5,285,998.80
  6. Step 6: Final answer
    x = 5,537,513.70

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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.