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Finding the Fourth Proportional to 6,872.31, 9,483.21 and 4,039.77

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Solution

The fourth proportional to 6,872.31, 9,483.21 and 4,039.77 is: 5,574.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,872.31 : 9,483.21 = 4,039.77 : x
  2. Step 2: Convert to fraction form
    6,872.31/9,483.21 = 4,039.77/x
  3. Step 3: Cross multiply
    6,872.31x = 9,483.21 × 4,039.77
  4. Step 4: Simplify right side
    6,872.31x = 38,310,022.82
  5. Step 5: Solve for x
    x = 38,310,022.82/6,872.31
  6. Step 6: Final answer
    x = 5,574.55

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