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Finding the Fourth Proportional to 29,998.59, 44,997.90 and 7,811.91

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Solution

The fourth proportional to 29,998.59, 44,997.90 and 7,811.91 is: 11,717.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,998.59 : 44,997.90 = 7,811.91 : x
  2. Step 2: Convert to fraction form
    29,998.59/44,997.90 = 7,811.91/x
  3. Step 3: Cross multiply
    29,998.59x = 44,997.90 × 7,811.91
  4. Step 4: Simplify right side
    29,998.59x = 351,519,544.99
  5. Step 5: Solve for x
    x = 351,519,544.99/29,998.59
  6. Step 6: Final answer
    x = 11,717.87

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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.