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Finding the Fourth Proportional to 1,996.82, 2,995.26 and 698.30

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Solution

The fourth proportional to 1,996.82, 2,995.26 and 698.30 is: 1,047.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,996.82 : 2,995.26 = 698.30 : x
  2. Step 2: Convert to fraction form
    1,996.82/2,995.26 = 698.30/x
  3. Step 3: Cross multiply
    1,996.82x = 2,995.26 × 698.30
  4. Step 4: Simplify right side
    1,996.82x = 2,091,590.06
  5. Step 5: Solve for x
    x = 2,091,590.06/1,996.82
  6. Step 6: Final answer
    x = 1,047.46

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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.