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Finding the Fourth Proportional to 61,145.82, 91,717.92 and 16,772.54

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Solution

The fourth proportional to 61,145.82, 91,717.92 and 16,772.54 is: 25,158.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,145.82 : 91,717.92 = 16,772.54 : x
  2. Step 2: Convert to fraction form
    61,145.82/91,717.92 = 16,772.54/x
  3. Step 3: Cross multiply
    61,145.82x = 91,717.92 × 16,772.54
  4. Step 4: Simplify right side
    61,145.82x = 1,538,342,023.33
  5. Step 5: Solve for x
    x = 1,538,342,023.33/61,145.82
  6. Step 6: Final answer
    x = 25,158.58

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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.