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Finding the Fourth Proportional to 62,778.78, 86,608.04 and 53,177.85

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Solution

The fourth proportional to 62,778.78, 86,608.04 and 53,177.85 is: 73,362.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,778.78 : 86,608.04 = 53,177.85 : x
  2. Step 2: Convert to fraction form
    62,778.78/86,608.04 = 53,177.85/x
  3. Step 3: Cross multiply
    62,778.78x = 86,608.04 × 53,177.85
  4. Step 4: Simplify right side
    62,778.78x = 4,605,629,094.02
  5. Step 5: Solve for x
    x = 4,605,629,094.02/62,778.78
  6. Step 6: Final answer
    x = 73,362.83

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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.