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Finding the Fourth Proportional to 61,122.92, 91,688.45 and 16,745.94

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Solution

The fourth proportional to 61,122.92, 91,688.45 and 16,745.94 is: 25,120.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,122.92 : 91,688.45 = 16,745.94 : x
  2. Step 2: Convert to fraction form
    61,122.92/91,688.45 = 16,745.94/x
  3. Step 3: Cross multiply
    61,122.92x = 91,688.45 × 16,745.94
  4. Step 4: Simplify right side
    61,122.92x = 1,535,409,198.66
  5. Step 5: Solve for x
    x = 1,535,409,198.66/61,122.92
  6. Step 6: Final answer
    x = 25,120.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.