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Finding the Fourth Proportional to 2,692.70, 3,716.09 and 1,513.86

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Solution

The fourth proportional to 2,692.70, 3,716.09 and 1,513.86 is: 2,089.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,692.70 : 3,716.09 = 1,513.86 : x
  2. Step 2: Convert to fraction form
    2,692.70/3,716.09 = 1,513.86/x
  3. Step 3: Cross multiply
    2,692.70x = 3,716.09 × 1,513.86
  4. Step 4: Simplify right side
    2,692.70x = 5,625,640.01
  5. Step 5: Solve for x
    x = 5,625,640.01/2,692.70
  6. Step 6: Final answer
    x = 2,089.22

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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.