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Finding the Fourth Proportional to 1,906.44, 2,859 and 982.48

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Solution

The fourth proportional to 1,906.44, 2,859 and 982.48 is: 1,473.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,906.44 : 2,859 = 982.48 : x
  2. Step 2: Convert to fraction form
    1,906.44/2,859 = 982.48/x
  3. Step 3: Cross multiply
    1,906.44x = 2,859 × 982.48
  4. Step 4: Simplify right side
    1,906.44x = 2,808,910.32
  5. Step 5: Solve for x
    x = 2,808,910.32/1,906.44
  6. Step 6: Final answer
    x = 1,473.38

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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.