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Finding the Fourth Proportional to 25,221.66, 37,836.63 and 7,687.38

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Solution

The fourth proportional to 25,221.66, 37,836.63 and 7,687.38 is: 11,532.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,221.66 : 37,836.63 = 7,687.38 : x
  2. Step 2: Convert to fraction form
    25,221.66/37,836.63 = 7,687.38/x
  3. Step 3: Cross multiply
    25,221.66x = 37,836.63 × 7,687.38
  4. Step 4: Simplify right side
    25,221.66x = 290,864,552.73
  5. Step 5: Solve for x
    x = 290,864,552.73/25,221.66
  6. Step 6: Final answer
    x = 11,532.33

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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.