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Finding the Fourth Proportional to 5,692.51, 8,540.43 and 2,921.12

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Solution

The fourth proportional to 5,692.51, 8,540.43 and 2,921.12 is: 4,382.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,692.51 : 8,540.43 = 2,921.12 : x
  2. Step 2: Convert to fraction form
    5,692.51/8,540.43 = 2,921.12/x
  3. Step 3: Cross multiply
    5,692.51x = 8,540.43 × 2,921.12
  4. Step 4: Simplify right side
    5,692.51x = 24,947,578.18
  5. Step 5: Solve for x
    x = 24,947,578.18/5,692.51
  6. Step 6: Final answer
    x = 4,382.53

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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.