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Finding the Fourth Proportional to 2,993.99, 4,131.65 and 1,667.81

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Solution

The fourth proportional to 2,993.99, 4,131.65 and 1,667.81 is: 2,301.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,993.99 : 4,131.65 = 1,667.81 : x
  2. Step 2: Convert to fraction form
    2,993.99/4,131.65 = 1,667.81/x
  3. Step 3: Cross multiply
    2,993.99x = 4,131.65 × 1,667.81
  4. Step 4: Simplify right side
    2,993.99x = 6,890,786.53
  5. Step 5: Solve for x
    x = 6,890,786.53/2,993.99
  6. Step 6: Final answer
    x = 2,301.54

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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.