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Finding the Fourth Proportional to 4,906.55, 7,361.36 and 1,621.95

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Solution

The fourth proportional to 4,906.55, 7,361.36 and 1,621.95 is: 2,433.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,906.55 : 7,361.36 = 1,621.95 : x
  2. Step 2: Convert to fraction form
    4,906.55/7,361.36 = 1,621.95/x
  3. Step 3: Cross multiply
    4,906.55x = 7,361.36 × 1,621.95
  4. Step 4: Simplify right side
    4,906.55x = 11,939,749.74
  5. Step 5: Solve for x
    x = 11,939,749.74/4,906.55
  6. Step 6: Final answer
    x = 2,433.43

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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.