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Finding the Fourth Proportional to 73,991.64, 110,984.22 and 21,399.96

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Solution

The fourth proportional to 73,991.64, 110,984.22 and 21,399.96 is: 32,099.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,991.64 : 110,984.22 = 21,399.96 : x
  2. Step 2: Convert to fraction form
    73,991.64/110,984.22 = 21,399.96/x
  3. Step 3: Cross multiply
    73,991.64x = 110,984.22 × 21,399.96
  4. Step 4: Simplify right side
    73,991.64x = 2,375,057,868.63
  5. Step 5: Solve for x
    x = 2,375,057,868.63/73,991.64
  6. Step 6: Final answer
    x = 32,099.00

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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.