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Finding the Fourth Proportional to 73,299.52, 109,936.64 and 20,696.72

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Solution

The fourth proportional to 73,299.52, 109,936.64 and 20,696.72 is: 31,041.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,299.52 : 109,936.64 = 20,696.72 : x
  2. Step 2: Convert to fraction form
    73,299.52/109,936.64 = 20,696.72/x
  3. Step 3: Cross multiply
    73,299.52x = 109,936.64 × 20,696.72
  4. Step 4: Simplify right side
    73,299.52x = 2,275,327,855.82
  5. Step 5: Solve for x
    x = 2,275,327,855.82/73,299.52
  6. Step 6: Final answer
    x = 31,041.51

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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.