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Finding the Fourth Proportional to 3,991.99, 5,501.77 and 3,248.41

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Solution

The fourth proportional to 3,991.99, 5,501.77 and 3,248.41 is: 4,476.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.99 : 5,501.77 = 3,248.41 : x
  2. Step 2: Convert to fraction form
    3,991.99/5,501.77 = 3,248.41/x
  3. Step 3: Cross multiply
    3,991.99x = 5,501.77 × 3,248.41
  4. Step 4: Simplify right side
    3,991.99x = 17,872,004.69
  5. Step 5: Solve for x
    x = 17,872,004.69/3,991.99
  6. Step 6: Final answer
    x = 4,476.97

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1.5x scale

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.