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Finding the Fourth Proportional to 17,981.82, 26,930.97 and 17,358.90

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Solution

The fourth proportional to 17,981.82, 26,930.97 and 17,358.90 is: 25,998.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,981.82 : 26,930.97 = 17,358.90 : x
  2. Step 2: Convert to fraction form
    17,981.82/26,930.97 = 17,358.90/x
  3. Step 3: Cross multiply
    17,981.82x = 26,930.97 × 17,358.90
  4. Step 4: Simplify right side
    17,981.82x = 467,492,015.13
  5. Step 5: Solve for x
    x = 467,492,015.13/17,981.82
  6. Step 6: Final answer
    x = 25,998.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.