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Finding the Fourth Proportional to 78,871.94, 108,845.67 and 44,885.31

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Solution

The fourth proportional to 78,871.94, 108,845.67 and 44,885.31 is: 61,943.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,871.94 : 108,845.67 = 44,885.31 : x
  2. Step 2: Convert to fraction form
    78,871.94/108,845.67 = 44,885.31/x
  3. Step 3: Cross multiply
    78,871.94x = 108,845.67 × 44,885.31
  4. Step 4: Simplify right side
    78,871.94x = 4,885,571,640.11
  5. Step 5: Solve for x
    x = 4,885,571,640.11/78,871.94
  6. Step 6: Final answer
    x = 61,943.09

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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.