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Finding the Fourth Proportional to 5,086.65, 7,621.01 and 4,454.90

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Solution

The fourth proportional to 5,086.65, 7,621.01 and 4,454.90 is: 6,674.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,086.65 : 7,621.01 = 4,454.90 : x
  2. Step 2: Convert to fraction form
    5,086.65/7,621.01 = 4,454.90/x
  3. Step 3: Cross multiply
    5,086.65x = 7,621.01 × 4,454.90
  4. Step 4: Simplify right side
    5,086.65x = 33,950,805.65
  5. Step 5: Solve for x
    x = 33,950,805.65/5,086.65
  6. Step 6: Final answer
    x = 6,674.49

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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.