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Finding the Fourth Proportional to 8,627.97, 11,906.76 and 5,091.31

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Solution

The fourth proportional to 8,627.97, 11,906.76 and 5,091.31 is: 7,026.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,627.97 : 11,906.76 = 5,091.31 : x
  2. Step 2: Convert to fraction form
    8,627.97/11,906.76 = 5,091.31/x
  3. Step 3: Cross multiply
    8,627.97x = 11,906.76 × 5,091.31
  4. Step 4: Simplify right side
    8,627.97x = 60,621,006.26
  5. Step 5: Solve for x
    x = 60,621,006.26/8,627.97
  6. Step 6: Final answer
    x = 7,026.10

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1.5x scale

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.