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Finding the Fourth Proportional to 1,998.65, 2,997.25 and 844.49

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Solution

The fourth proportional to 1,998.65, 2,997.25 and 844.49 is: 1,266.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.65 : 2,997.25 = 844.49 : x
  2. Step 2: Convert to fraction form
    1,998.65/2,997.25 = 844.49/x
  3. Step 3: Cross multiply
    1,998.65x = 2,997.25 × 844.49
  4. Step 4: Simplify right side
    1,998.65x = 2,531,130.56
  5. Step 5: Solve for x
    x = 2,531,130.56/1,998.65
  6. Step 6: Final answer
    x = 1,266.42

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.