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Finding the Fourth Proportional to 6,921.72, 9,551.79 and 6,364.44

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Solution

The fourth proportional to 6,921.72, 9,551.79 and 6,364.44 is: 8,782.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.72 : 9,551.79 = 6,364.44 : x
  2. Step 2: Convert to fraction form
    6,921.72/9,551.79 = 6,364.44/x
  3. Step 3: Cross multiply
    6,921.72x = 9,551.79 × 6,364.44
  4. Step 4: Simplify right side
    6,921.72x = 60,791,794.35
  5. Step 5: Solve for x
    x = 60,791,794.35/6,921.72
  6. Step 6: Final answer
    x = 8,782.76

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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.