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Finding the Fourth Proportional to 8,397,809.20, 12,597,942.60 and 2,717,066.80

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Solution

The fourth proportional to 8,397,809.20, 12,597,942.60 and 2,717,066.80 is: 4,075,997.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,397,809.20 : 12,597,942.60 = 2,717,066.80 : x
  2. Step 2: Convert to fraction form
    8,397,809.20/12,597,942.60 = 2,717,066.80/x
  3. Step 3: Cross multiply
    8,397,809.20x = 12,597,942.60 × 2,717,066.80
  4. Step 4: Simplify right side
    8,397,809.20x = 34,229,451,586,765.68
  5. Step 5: Solve for x
    x = 34,229,451,586,765.68/8,397,809.20
  6. Step 6: Final answer
    x = 4,075,997.77

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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.