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Finding the Fourth Proportional to 49,879.94, 68,846.13 and 28,671.53

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Solution

The fourth proportional to 49,879.94, 68,846.13 and 28,671.53 is: 39,573.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,879.94 : 68,846.13 = 28,671.53 : x
  2. Step 2: Convert to fraction form
    49,879.94/68,846.13 = 28,671.53/x
  3. Step 3: Cross multiply
    49,879.94x = 68,846.13 × 28,671.53
  4. Step 4: Simplify right side
    49,879.94x = 1,973,923,537.45
  5. Step 5: Solve for x
    x = 1,973,923,537.45/49,879.94
  6. Step 6: Final answer
    x = 39,573.50

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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.