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Finding the Fourth Proportional to 18,996.60, 26,211.78 and 11,035.92

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Solution

The fourth proportional to 18,996.60, 26,211.78 and 11,035.92 is: 15,227.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,996.60 : 26,211.78 = 11,035.92 : x
  2. Step 2: Convert to fraction form
    18,996.60/26,211.78 = 11,035.92/x
  3. Step 3: Cross multiply
    18,996.60x = 26,211.78 × 11,035.92
  4. Step 4: Simplify right side
    18,996.60x = 289,271,107.14
  5. Step 5: Solve for x
    x = 289,271,107.14/18,996.60
  6. Step 6: Final answer
    x = 15,227.52

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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.