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Finding the Fourth Proportional to 18,661.28, 25,755 and 10,701.95

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Solution

The fourth proportional to 18,661.28, 25,755 and 10,701.95 is: 14,770.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,661.28 : 25,755 = 10,701.95 : x
  2. Step 2: Convert to fraction form
    18,661.28/25,755 = 10,701.95/x
  3. Step 3: Cross multiply
    18,661.28x = 25,755 × 10,701.95
  4. Step 4: Simplify right side
    18,661.28x = 275,628,722.25
  5. Step 5: Solve for x
    x = 275,628,722.25/18,661.28
  6. Step 6: Final answer
    x = 14,770.09

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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.