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Finding the Fourth Proportional to 62,839.44, 86,689.52 and 55,676.68

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Solution

The fourth proportional to 62,839.44, 86,689.52 and 55,676.68 is: 76,808.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,839.44 : 86,689.52 = 55,676.68 : x
  2. Step 2: Convert to fraction form
    62,839.44/86,689.52 = 55,676.68/x
  3. Step 3: Cross multiply
    62,839.44x = 86,689.52 × 55,676.68
  4. Step 4: Simplify right side
    62,839.44x = 4,826,584,664.39
  5. Step 5: Solve for x
    x = 4,826,584,664.39/62,839.44
  6. Step 6: Final answer
    x = 76,808.21

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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.