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Finding the Fourth Proportional to 18,699.96, 28,062.09 and 17,198.22

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Solution

The fourth proportional to 18,699.96, 28,062.09 and 17,198.22 is: 25,808.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,699.96 : 28,062.09 = 17,198.22 : x
  2. Step 2: Convert to fraction form
    18,699.96/28,062.09 = 17,198.22/x
  3. Step 3: Cross multiply
    18,699.96x = 28,062.09 × 17,198.22
  4. Step 4: Simplify right side
    18,699.96x = 482,617,997.48
  5. Step 5: Solve for x
    x = 482,617,997.48/18,699.96
  6. Step 6: Final answer
    x = 25,808.50

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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.