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Finding the Fourth Proportional to 62,644.13, 86,447.86 and 35,419.78

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Solution

The fourth proportional to 62,644.13, 86,447.86 and 35,419.78 is: 48,878.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,644.13 : 86,447.86 = 35,419.78 : x
  2. Step 2: Convert to fraction form
    62,644.13/86,447.86 = 35,419.78/x
  3. Step 3: Cross multiply
    62,644.13x = 86,447.86 × 35,419.78
  4. Step 4: Simplify right side
    62,644.13x = 3,061,964,202.18
  5. Step 5: Solve for x
    x = 3,061,964,202.18/62,644.13
  6. Step 6: Final answer
    x = 48,878.71

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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.