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Finding the Fourth Proportional to 18,891.63, 26,073.90 and 10,934.60

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Solution

The fourth proportional to 18,891.63, 26,073.90 and 10,934.60 is: 15,091.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.63 : 26,073.90 = 10,934.60 : x
  2. Step 2: Convert to fraction form
    18,891.63/26,073.90 = 10,934.60/x
  3. Step 3: Cross multiply
    18,891.63x = 26,073.90 × 10,934.60
  4. Step 4: Simplify right side
    18,891.63x = 285,107,536.57
  5. Step 5: Solve for x
    x = 285,107,536.57/18,891.63
  6. Step 6: Final answer
    x = 15,091.74

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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.