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Finding the Fourth Proportional to 2,853.77, 3,939.03 and 1,806.44

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Solution

The fourth proportional to 2,853.77, 3,939.03 and 1,806.44 is: 2,493.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,853.77 : 3,939.03 = 1,806.44 : x
  2. Step 2: Convert to fraction form
    2,853.77/3,939.03 = 1,806.44/x
  3. Step 3: Cross multiply
    2,853.77x = 3,939.03 × 1,806.44
  4. Step 4: Simplify right side
    2,853.77x = 7,115,601.66
  5. Step 5: Solve for x
    x = 7,115,601.66/2,853.77
  6. Step 6: Final answer
    x = 2,493.41

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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.