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Finding the Fourth Proportional to 62,921.52, 86,644.35 and 61,524.54

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Solution

The fourth proportional to 62,921.52, 86,644.35 and 61,524.54 is: 84,720.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,921.52 : 86,644.35 = 61,524.54 : x
  2. Step 2: Convert to fraction form
    62,921.52/86,644.35 = 61,524.54/x
  3. Step 3: Cross multiply
    62,921.52x = 86,644.35 × 61,524.54
  4. Step 4: Simplify right side
    62,921.52x = 5,330,753,777.35
  5. Step 5: Solve for x
    x = 5,330,753,777.35/62,921.52
  6. Step 6: Final answer
    x = 84,720.68

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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.