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Finding the Fourth Proportional to 18,626.20, 25,706.50 and 11,553.68

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Solution

The fourth proportional to 18,626.20, 25,706.50 and 11,553.68 is: 15,945.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,626.20 : 25,706.50 = 11,553.68 : x
  2. Step 2: Convert to fraction form
    18,626.20/25,706.50 = 11,553.68/x
  3. Step 3: Cross multiply
    18,626.20x = 25,706.50 × 11,553.68
  4. Step 4: Simplify right side
    18,626.20x = 297,004,710.30
  5. Step 5: Solve for x
    x = 297,004,710.30/18,626.20
  6. Step 6: Final answer
    x = 15,945.54

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1.5x scale

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.