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Finding the Fourth Proportional to 62,790.78, 86,650.08 and 35,935.22

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Solution

The fourth proportional to 62,790.78, 86,650.08 and 35,935.22 is: 49,589.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,790.78 : 86,650.08 = 35,935.22 : x
  2. Step 2: Convert to fraction form
    62,790.78/86,650.08 = 35,935.22/x
  3. Step 3: Cross multiply
    62,790.78x = 86,650.08 × 35,935.22
  4. Step 4: Simplify right side
    62,790.78x = 3,113,789,687.82
  5. Step 5: Solve for x
    x = 3,113,789,687.82/62,790.78
  6. Step 6: Final answer
    x = 49,589.92

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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.