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Finding the Fourth Proportional to 2,716.39, 4,074.46 and 742.01

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Solution

The fourth proportional to 2,716.39, 4,074.46 and 742.01 is: 1,112.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,716.39 : 4,074.46 = 742.01 : x
  2. Step 2: Convert to fraction form
    2,716.39/4,074.46 = 742.01/x
  3. Step 3: Cross multiply
    2,716.39x = 4,074.46 × 742.01
  4. Step 4: Simplify right side
    2,716.39x = 3,023,290.06
  5. Step 5: Solve for x
    x = 3,023,290.06/2,716.39
  6. Step 6: Final answer
    x = 1,112.98

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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.