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Finding the Fourth Proportional to 3,348.98, 5,043.22 and 2,921.30

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Solution

The fourth proportional to 3,348.98, 5,043.22 and 2,921.30 is: 4,399.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,348.98 : 5,043.22 = 2,921.30 : x
  2. Step 2: Convert to fraction form
    3,348.98/5,043.22 = 2,921.30/x
  3. Step 3: Cross multiply
    3,348.98x = 5,043.22 × 2,921.30
  4. Step 4: Simplify right side
    3,348.98x = 14,732,743.98
  5. Step 5: Solve for x
    x = 14,732,743.98/3,348.98
  6. Step 6: Final answer
    x = 4,399.17

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.