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Finding the Fourth Proportional to 4,671.89, 6,447.21 and 2,576

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Solution

The fourth proportional to 4,671.89, 6,447.21 and 2,576 is: 3,554.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,671.89 : 6,447.21 = 2,576 : x
  2. Step 2: Convert to fraction form
    4,671.89/6,447.21 = 2,576/x
  3. Step 3: Cross multiply
    4,671.89x = 6,447.21 × 2,576
  4. Step 4: Simplify right side
    4,671.89x = 16,608,012.96
  5. Step 5: Solve for x
    x = 16,608,012.96/4,671.89
  6. Step 6: Final answer
    x = 3,554.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.