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Finding the Fourth Proportional to 4,746.92, 7,121.39 and 1,626.09

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Solution

The fourth proportional to 4,746.92, 7,121.39 and 1,626.09 is: 2,439.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,746.92 : 7,121.39 = 1,626.09 : x
  2. Step 2: Convert to fraction form
    4,746.92/7,121.39 = 1,626.09/x
  3. Step 3: Cross multiply
    4,746.92x = 7,121.39 × 1,626.09
  4. Step 4: Simplify right side
    4,746.92x = 11,580,025.13
  5. Step 5: Solve for x
    x = 11,580,025.13/4,746.92
  6. Step 6: Final answer
    x = 2,439.48

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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.