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Finding the Fourth Proportional to 17,851.28, 26,786.10 and 8,501.90

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Solution

The fourth proportional to 17,851.28, 26,786.10 and 8,501.90 is: 12,757.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,851.28 : 26,786.10 = 8,501.90 : x
  2. Step 2: Convert to fraction form
    17,851.28/26,786.10 = 8,501.90/x
  3. Step 3: Cross multiply
    17,851.28x = 26,786.10 × 8,501.90
  4. Step 4: Simplify right side
    17,851.28x = 227,732,743.59
  5. Step 5: Solve for x
    x = 227,732,743.59/17,851.28
  6. Step 6: Final answer
    x = 12,757.22

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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.