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Finding the Fourth Proportional to 4,808.44, 7,212.72 and 2,755

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Solution

The fourth proportional to 4,808.44, 7,212.72 and 2,755 is: 4,132.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,808.44 : 7,212.72 = 2,755 : x
  2. Step 2: Convert to fraction form
    4,808.44/7,212.72 = 2,755/x
  3. Step 3: Cross multiply
    4,808.44x = 7,212.72 × 2,755
  4. Step 4: Simplify right side
    4,808.44x = 19,871,043.60
  5. Step 5: Solve for x
    x = 19,871,043.60/4,808.44
  6. Step 6: Final answer
    x = 4,132.53

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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.