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Finding the Fourth Proportional to 74,855.94, 103,318.57 and 49,366.91

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Solution

The fourth proportional to 74,855.94, 103,318.57 and 49,366.91 is: 68,137.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,855.94 : 103,318.57 = 49,366.91 : x
  2. Step 2: Convert to fraction form
    74,855.94/103,318.57 = 49,366.91/x
  3. Step 3: Cross multiply
    74,855.94x = 103,318.57 × 49,366.91
  4. Step 4: Simplify right side
    74,855.94x = 5,100,518,546.52
  5. Step 5: Solve for x
    x = 5,100,518,546.52/74,855.94
  6. Step 6: Final answer
    x = 68,137.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.