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Finding the Fourth Proportional to 22,007.01, 32,979.03 and 16,991.90

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Solution

The fourth proportional to 22,007.01, 32,979.03 and 16,991.90 is: 25,463.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,007.01 : 32,979.03 = 16,991.90 : x
  2. Step 2: Convert to fraction form
    22,007.01/32,979.03 = 16,991.90/x
  3. Step 3: Cross multiply
    22,007.01x = 32,979.03 × 16,991.90
  4. Step 4: Simplify right side
    22,007.01x = 560,376,379.86
  5. Step 5: Solve for x
    x = 560,376,379.86/22,007.01
  6. Step 6: Final answer
    x = 25,463.54

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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.