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Finding the Fourth Proportional to 18,980.97, 26,191.80 and 11,024.88

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Solution

The fourth proportional to 18,980.97, 26,191.80 and 11,024.88 is: 15,213.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,980.97 : 26,191.80 = 11,024.88 : x
  2. Step 2: Convert to fraction form
    18,980.97/26,191.80 = 11,024.88/x
  3. Step 3: Cross multiply
    18,980.97x = 26,191.80 × 11,024.88
  4. Step 4: Simplify right side
    18,980.97x = 288,761,451.98
  5. Step 5: Solve for x
    x = 288,761,451.98/18,980.97
  6. Step 6: Final answer
    x = 15,213.21

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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.