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Finding the Fourth Proportional to 78,891.84, 118,372.44 and 41,443.21

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Solution

The fourth proportional to 78,891.84, 118,372.44 and 41,443.21 is: 62,183.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,891.84 : 118,372.44 = 41,443.21 : x
  2. Step 2: Convert to fraction form
    78,891.84/118,372.44 = 41,443.21/x
  3. Step 3: Cross multiply
    78,891.84x = 118,372.44 × 41,443.21
  4. Step 4: Simplify right side
    78,891.84x = 4,905,733,959.39
  5. Step 5: Solve for x
    x = 4,905,733,959.39/78,891.84
  6. Step 6: Final answer
    x = 62,183.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.