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Finding the Fourth Proportional to 3,325.66, 4,978.81 and 1,934.75

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Solution

The fourth proportional to 3,325.66, 4,978.81 and 1,934.75 is: 2,896.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,325.66 : 4,978.81 = 1,934.75 : x
  2. Step 2: Convert to fraction form
    3,325.66/4,978.81 = 1,934.75/x
  3. Step 3: Cross multiply
    3,325.66x = 4,978.81 × 1,934.75
  4. Step 4: Simplify right side
    3,325.66x = 9,632,752.65
  5. Step 5: Solve for x
    x = 9,632,752.65/3,325.66
  6. Step 6: Final answer
    x = 2,896.49

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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.