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Finding the Fourth Proportional to 17,990.16, 26,993 and 9,660.43

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Solution

The fourth proportional to 17,990.16, 26,993 and 9,660.43 is: 14,494.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,990.16 : 26,993 = 9,660.43 : x
  2. Step 2: Convert to fraction form
    17,990.16/26,993 = 9,660.43/x
  3. Step 3: Cross multiply
    17,990.16x = 26,993 × 9,660.43
  4. Step 4: Simplify right side
    17,990.16x = 260,763,986.99
  5. Step 5: Solve for x
    x = 260,763,986.99/17,990.16
  6. Step 6: Final answer
    x = 14,494.81

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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.