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Finding the Fourth Proportional to 17,989.46, 26,972.49 and 7,456.61

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Solution

The fourth proportional to 17,989.46, 26,972.49 and 7,456.61 is: 11,180.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,989.46 : 26,972.49 = 7,456.61 : x
  2. Step 2: Convert to fraction form
    17,989.46/26,972.49 = 7,456.61/x
  3. Step 3: Cross multiply
    17,989.46x = 26,972.49 × 7,456.61
  4. Step 4: Simplify right side
    17,989.46x = 201,123,338.66
  5. Step 5: Solve for x
    x = 201,123,338.66/17,989.46
  6. Step 6: Final answer
    x = 11,180.07

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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.