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Finding the Fourth Proportional to 7,776.41, 10,728.05 and 4,791.15

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Solution

The fourth proportional to 7,776.41, 10,728.05 and 4,791.15 is: 6,609.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,776.41 : 10,728.05 = 4,791.15 : x
  2. Step 2: Convert to fraction form
    7,776.41/10,728.05 = 4,791.15/x
  3. Step 3: Cross multiply
    7,776.41x = 10,728.05 × 4,791.15
  4. Step 4: Simplify right side
    7,776.41x = 51,399,672.80
  5. Step 5: Solve for x
    x = 51,399,672.80/7,776.41
  6. Step 6: Final answer
    x = 6,609.70

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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.