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Finding the Fourth Proportional to 4,879.66, 7,320.26 and 1,591.99

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Solution

The fourth proportional to 4,879.66, 7,320.26 and 1,591.99 is: 2,388.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.66 : 7,320.26 = 1,591.99 : x
  2. Step 2: Convert to fraction form
    4,879.66/7,320.26 = 1,591.99/x
  3. Step 3: Cross multiply
    4,879.66x = 7,320.26 × 1,591.99
  4. Step 4: Simplify right side
    4,879.66x = 11,653,780.72
  5. Step 5: Solve for x
    x = 11,653,780.72/4,879.66
  6. Step 6: Final answer
    x = 2,388.24

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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.