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Finding the Fourth Proportional to 18,824.94, 25,978.62 and 11,755.46

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Solution

The fourth proportional to 18,824.94, 25,978.62 and 11,755.46 is: 16,222.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,824.94 : 25,978.62 = 11,755.46 : x
  2. Step 2: Convert to fraction form
    18,824.94/25,978.62 = 11,755.46/x
  3. Step 3: Cross multiply
    18,824.94x = 25,978.62 × 11,755.46
  4. Step 4: Simplify right side
    18,824.94x = 305,390,628.27
  5. Step 5: Solve for x
    x = 305,390,628.27/18,824.94
  6. Step 6: Final answer
    x = 16,222.66

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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.