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Finding the Fourth Proportional to 49,643.76, 68,524.36 and 31,786.88

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Solution

The fourth proportional to 49,643.76, 68,524.36 and 31,786.88 is: 43,876.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,643.76 : 68,524.36 = 31,786.88 : x
  2. Step 2: Convert to fraction form
    49,643.76/68,524.36 = 31,786.88/x
  3. Step 3: Cross multiply
    49,643.76x = 68,524.36 × 31,786.88
  4. Step 4: Simplify right side
    49,643.76x = 2,178,175,608.40
  5. Step 5: Solve for x
    x = 2,178,175,608.40/49,643.76
  6. Step 6: Final answer
    x = 43,876.12

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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.