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Finding the Fourth Proportional to 1,692.84, 2,336.33 and 994.22

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Solution

The fourth proportional to 1,692.84, 2,336.33 and 994.22 is: 1,372.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692.84 : 2,336.33 = 994.22 : x
  2. Step 2: Convert to fraction form
    1,692.84/2,336.33 = 994.22/x
  3. Step 3: Cross multiply
    1,692.84x = 2,336.33 × 994.22
  4. Step 4: Simplify right side
    1,692.84x = 2,322,825.58
  5. Step 5: Solve for x
    x = 2,322,825.58/1,692.84
  6. Step 6: Final answer
    x = 1,372.14

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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.