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Finding the Fourth Proportional to 18,662.76, 25,754.60 and 10,279.26

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Solution

The fourth proportional to 18,662.76, 25,754.60 and 10,279.26 is: 14,185.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,662.76 : 25,754.60 = 10,279.26 : x
  2. Step 2: Convert to fraction form
    18,662.76/25,754.60 = 10,279.26/x
  3. Step 3: Cross multiply
    18,662.76x = 25,754.60 × 10,279.26
  4. Step 4: Simplify right side
    18,662.76x = 264,738,120.17
  5. Step 5: Solve for x
    x = 264,738,120.17/18,662.76
  6. Step 6: Final answer
    x = 14,185.37

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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.