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Finding the Fourth Proportional to 5,821.98, 8,721.99 and 4,507.98

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Solution

The fourth proportional to 5,821.98, 8,721.99 and 4,507.98 is: 6,753.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,821.98 : 8,721.99 = 4,507.98 : x
  2. Step 2: Convert to fraction form
    5,821.98/8,721.99 = 4,507.98/x
  3. Step 3: Cross multiply
    5,821.98x = 8,721.99 × 4,507.98
  4. Step 4: Simplify right side
    5,821.98x = 39,318,556.48
  5. Step 5: Solve for x
    x = 39,318,556.48/5,821.98
  6. Step 6: Final answer
    x = 6,753.47

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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.