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Finding the Fourth Proportional to 73,163.84, 109,732.56 and 20,560.48

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Solution

The fourth proportional to 73,163.84, 109,732.56 and 20,560.48 is: 30,837.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,163.84 : 109,732.56 = 20,560.48 : x
  2. Step 2: Convert to fraction form
    73,163.84/109,732.56 = 20,560.48/x
  3. Step 3: Cross multiply
    73,163.84x = 109,732.56 × 20,560.48
  4. Step 4: Simplify right side
    73,163.84x = 2,256,154,105.23
  5. Step 5: Solve for x
    x = 2,256,154,105.23/73,163.84
  6. Step 6: Final answer
    x = 30,837.01

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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.