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Finding the Fourth Proportional to 73,133.84, 109,626.90 and 28,791.71

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Solution

The fourth proportional to 73,133.84, 109,626.90 and 28,791.71 is: 43,158.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,133.84 : 109,626.90 = 28,791.71 : x
  2. Step 2: Convert to fraction form
    73,133.84/109,626.90 = 28,791.71/x
  3. Step 3: Cross multiply
    73,133.84x = 109,626.90 × 28,791.71
  4. Step 4: Simplify right side
    73,133.84x = 3,156,345,913.00
  5. Step 5: Solve for x
    x = 3,156,345,913.00/73,133.84
  6. Step 6: Final answer
    x = 43,158.49

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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.