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Finding the Fourth Proportional to 18,909.54, 26,091.87 and 10,950.48

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Solution

The fourth proportional to 18,909.54, 26,091.87 and 10,950.48 is: 15,109.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,909.54 : 26,091.87 = 10,950.48 : x
  2. Step 2: Convert to fraction form
    18,909.54/26,091.87 = 10,950.48/x
  3. Step 3: Cross multiply
    18,909.54x = 26,091.87 × 10,950.48
  4. Step 4: Simplify right side
    18,909.54x = 285,718,500.60
  5. Step 5: Solve for x
    x = 285,718,500.60/18,909.54
  6. Step 6: Final answer
    x = 15,109.75

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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.