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Finding the Fourth Proportional to 4,782.92, 6,600.60 and 2,687

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Solution

The fourth proportional to 4,782.92, 6,600.60 and 2,687 is: 3,708.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,782.92 : 6,600.60 = 2,687 : x
  2. Step 2: Convert to fraction form
    4,782.92/6,600.60 = 2,687/x
  3. Step 3: Cross multiply
    4,782.92x = 6,600.60 × 2,687
  4. Step 4: Simplify right side
    4,782.92x = 17,735,812.20
  5. Step 5: Solve for x
    x = 17,735,812.20/4,782.92
  6. Step 6: Final answer
    x = 3,708.16

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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.