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Finding the Fourth Proportional to 8,649.31, 11,936.78 and 4,873.22

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Solution

The fourth proportional to 8,649.31, 11,936.78 and 4,873.22 is: 6,725.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,649.31 : 11,936.78 = 4,873.22 : x
  2. Step 2: Convert to fraction form
    8,649.31/11,936.78 = 4,873.22/x
  3. Step 3: Cross multiply
    8,649.31x = 11,936.78 × 4,873.22
  4. Step 4: Simplify right side
    8,649.31x = 58,170,555.03
  5. Step 5: Solve for x
    x = 58,170,555.03/8,649.31
  6. Step 6: Final answer
    x = 6,725.46

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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.