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Finding the Fourth Proportional to 7,093.74, 9,791.10 and 4,979.64

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Solution

The fourth proportional to 7,093.74, 9,791.10 and 4,979.64 is: 6,873.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,093.74 : 9,791.10 = 4,979.64 : x
  2. Step 2: Convert to fraction form
    7,093.74/9,791.10 = 4,979.64/x
  3. Step 3: Cross multiply
    7,093.74x = 9,791.10 × 4,979.64
  4. Step 4: Simplify right side
    7,093.74x = 48,756,153.20
  5. Step 5: Solve for x
    x = 48,756,153.20/7,093.74
  6. Step 6: Final answer
    x = 6,873.12

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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.