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Finding the Fourth Proportional to 73,216.36, 109,728.54 and 41,640.94

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Solution

The fourth proportional to 73,216.36, 109,728.54 and 41,640.94 is: 62,406.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,216.36 : 109,728.54 = 41,640.94 : x
  2. Step 2: Convert to fraction form
    73,216.36/109,728.54 = 41,640.94/x
  3. Step 3: Cross multiply
    73,216.36x = 109,728.54 × 41,640.94
  4. Step 4: Simplify right side
    73,216.36x = 4,569,199,550.43
  5. Step 5: Solve for x
    x = 4,569,199,550.43/73,216.36
  6. Step 6: Final answer
    x = 62,406.81

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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.