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Finding the Fourth Proportional to 18,960.60, 26,163.84 and 18,323.63

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Solution

The fourth proportional to 18,960.60, 26,163.84 and 18,323.63 is: 25,284.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,960.60 : 26,163.84 = 18,323.63 : x
  2. Step 2: Convert to fraction form
    18,960.60/26,163.84 = 18,323.63/x
  3. Step 3: Cross multiply
    18,960.60x = 26,163.84 × 18,323.63
  4. Step 4: Simplify right side
    18,960.60x = 479,416,523.54
  5. Step 5: Solve for x
    x = 479,416,523.54/18,960.60
  6. Step 6: Final answer
    x = 25,284.88

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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.