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Finding the Fourth Proportional to 57,994,469.80, 86,991,704.70 and 20,172,005.80

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Solution

The fourth proportional to 57,994,469.80, 86,991,704.70 and 20,172,005.80 is: 30,258,008.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,994,469.80 : 86,991,704.70 = 20,172,005.80 : x
  2. Step 2: Convert to fraction form
    57,994,469.80/86,991,704.70 = 20,172,005.80/x
  3. Step 3: Cross multiply
    57,994,469.80x = 86,991,704.70 × 20,172,005.80
  4. Step 4: Simplify right side
    57,994,469.80x = 1,754,797,171,760,287.50
  5. Step 5: Solve for x
    x = 1,754,797,171,760,287.50/57,994,469.80
  6. Step 6: Final answer
    x = 30,258,008.70

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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.