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Finding the Fourth Proportional to 5,412.98, 8,120.01 and 2,492.12

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Solution

The fourth proportional to 5,412.98, 8,120.01 and 2,492.12 is: 3,738.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.98 : 8,120.01 = 2,492.12 : x
  2. Step 2: Convert to fraction form
    5,412.98/8,120.01 = 2,492.12/x
  3. Step 3: Cross multiply
    5,412.98x = 8,120.01 × 2,492.12
  4. Step 4: Simplify right side
    5,412.98x = 20,236,039.32
  5. Step 5: Solve for x
    x = 20,236,039.32/5,412.98
  6. Step 6: Final answer
    x = 3,738.43

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.