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Finding the Fourth Proportional to 4,979.74, 7,468.94 and 2,057.64

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Solution

The fourth proportional to 4,979.74, 7,468.94 and 2,057.64 is: 3,086.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.74 : 7,468.94 = 2,057.64 : x
  2. Step 2: Convert to fraction form
    4,979.74/7,468.94 = 2,057.64/x
  3. Step 3: Cross multiply
    4,979.74x = 7,468.94 × 2,057.64
  4. Step 4: Simplify right side
    4,979.74x = 15,368,389.70
  5. Step 5: Solve for x
    x = 15,368,389.70/4,979.74
  6. Step 6: Final answer
    x = 3,086.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.