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Finding the Fourth Proportional to 19,720,249.12, 29,714,978.89 and 16,204,766.92

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Solution

The fourth proportional to 19,720,249.12, 29,714,978.89 and 16,204,766.92 is: 24,417,759.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,720,249.12 : 29,714,978.89 = 16,204,766.92 : x
  2. Step 2: Convert to fraction form
    19,720,249.12/29,714,978.89 = 16,204,766.92/x
  3. Step 3: Cross multiply
    19,720,249.12x = 29,714,978.89 × 16,204,766.92
  4. Step 4: Simplify right side
    19,720,249.12x = 481,524,306,945,170.31
  5. Step 5: Solve for x
    x = 481,524,306,945,170.31/19,720,249.12
  6. Step 6: Final answer
    x = 24,417,759.84

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.