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Finding the Fourth Proportional to 67,991,632.80, 101,987,449.20 and 54,554,704.80

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Solution

The fourth proportional to 67,991,632.80, 101,987,449.20 and 54,554,704.80 is: 81,832,057.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,991,632.80 : 101,987,449.20 = 54,554,704.80 : x
  2. Step 2: Convert to fraction form
    67,991,632.80/101,987,449.20 = 54,554,704.80/x
  3. Step 3: Cross multiply
    67,991,632.80x = 101,987,449.20 × 54,554,704.80
  4. Step 4: Simplify right side
    67,991,632.80x = 5,563,895,184,410,996
  5. Step 5: Solve for x
    x = 5,563,895,184,410,996/67,991,632.80
  6. Step 6: Final answer
    x = 81,832,057.20

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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.