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Finding the Fourth Proportional to 73,049.39, 109,529.73 and 28,622.91

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Solution

The fourth proportional to 73,049.39, 109,529.73 and 28,622.91 is: 42,916.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,049.39 : 109,529.73 = 28,622.91 : x
  2. Step 2: Convert to fraction form
    73,049.39/109,529.73 = 28,622.91/x
  3. Step 3: Cross multiply
    73,049.39x = 109,529.73 × 28,622.91
  4. Step 4: Simplify right side
    73,049.39x = 3,135,059,604.11
  5. Step 5: Solve for x
    x = 3,135,059,604.11/73,049.39
  6. Step 6: Final answer
    x = 42,916.99

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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.