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Finding the Fourth Proportional to 78,865.11, 108,843.41 and 44,881.87

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Solution

The fourth proportional to 78,865.11, 108,843.41 and 44,881.87 is: 61,942.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,865.11 : 108,843.41 = 44,881.87 : x
  2. Step 2: Convert to fraction form
    78,865.11/108,843.41 = 44,881.87/x
  3. Step 3: Cross multiply
    78,865.11x = 108,843.41 × 44,881.87
  4. Step 4: Simplify right side
    78,865.11x = 4,885,095,393.66
  5. Step 5: Solve for x
    x = 4,885,095,393.66/78,865.11
  6. Step 6: Final answer
    x = 61,942.41

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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.