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Finding the Fourth Proportional to 2,008.74, 3,013.31 and 692.33

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Solution

The fourth proportional to 2,008.74, 3,013.31 and 692.33 is: 1,038.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,008.74 : 3,013.31 = 692.33 : x
  2. Step 2: Convert to fraction form
    2,008.74/3,013.31 = 692.33/x
  3. Step 3: Cross multiply
    2,008.74x = 3,013.31 × 692.33
  4. Step 4: Simplify right side
    2,008.74x = 2,086,186.38
  5. Step 5: Solve for x
    x = 2,086,186.38/2,008.74
  6. Step 6: Final answer
    x = 1,038.55

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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.