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Finding the Fourth Proportional to 2,692.44, 4,038.66 and 744.66

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Solution

The fourth proportional to 2,692.44, 4,038.66 and 744.66 is: 1,116.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,692.44 : 4,038.66 = 744.66 : x
  2. Step 2: Convert to fraction form
    2,692.44/4,038.66 = 744.66/x
  3. Step 3: Cross multiply
    2,692.44x = 4,038.66 × 744.66
  4. Step 4: Simplify right side
    2,692.44x = 3,007,428.56
  5. Step 5: Solve for x
    x = 3,007,428.56/2,692.44
  6. Step 6: Final answer
    x = 1,116.99

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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.