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Finding the Fourth Proportional to 6,493,612.80, 9,740,419.20 and 2,709,811.20

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Solution

The fourth proportional to 6,493,612.80, 9,740,419.20 and 2,709,811.20 is: 4,064,716.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,493,612.80 : 9,740,419.20 = 2,709,811.20 : x
  2. Step 2: Convert to fraction form
    6,493,612.80/9,740,419.20 = 2,709,811.20/x
  3. Step 3: Cross multiply
    6,493,612.80x = 9,740,419.20 × 2,709,811.20
  4. Step 4: Simplify right side
    6,493,612.80x = 26,394,697,040,855.04
  5. Step 5: Solve for x
    x = 26,394,697,040,855.04/6,493,612.80
  6. Step 6: Final answer
    x = 4,064,716.80

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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.