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Finding the Fourth Proportional to 6,362.87, 8,781.81 and 3,531.15

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Solution

The fourth proportional to 6,362.87, 8,781.81 and 3,531.15 is: 4,873.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,362.87 : 8,781.81 = 3,531.15 : x
  2. Step 2: Convert to fraction form
    6,362.87/8,781.81 = 3,531.15/x
  3. Step 3: Cross multiply
    6,362.87x = 8,781.81 × 3,531.15
  4. Step 4: Simplify right side
    6,362.87x = 31,009,926.32
  5. Step 5: Solve for x
    x = 31,009,926.32/6,362.87
  6. Step 6: Final answer
    x = 4,873.58

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Why These Related Problems?

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