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Finding the Fourth Proportional to 62,983.76, 86,917.60 and 34,689.44

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Solution

The fourth proportional to 62,983.76, 86,917.60 and 34,689.44 is: 47,871.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,983.76 : 86,917.60 = 34,689.44 : x
  2. Step 2: Convert to fraction form
    62,983.76/86,917.60 = 34,689.44/x
  3. Step 3: Cross multiply
    62,983.76x = 86,917.60 × 34,689.44
  4. Step 4: Simplify right side
    62,983.76x = 3,015,122,870.14
  5. Step 5: Solve for x
    x = 3,015,122,870.14/62,983.76
  6. Step 6: Final answer
    x = 47,871.43

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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.