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Finding the Fourth Proportional to 8,620.33, 12,923.08 and 2,997.26

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Solution

The fourth proportional to 8,620.33, 12,923.08 and 2,997.26 is: 4,493.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.33 : 12,923.08 = 2,997.26 : x
  2. Step 2: Convert to fraction form
    8,620.33/12,923.08 = 2,997.26/x
  3. Step 3: Cross multiply
    8,620.33x = 12,923.08 × 2,997.26
  4. Step 4: Simplify right side
    8,620.33x = 38,733,866.82
  5. Step 5: Solve for x
    x = 38,733,866.82/8,620.33
  6. Step 6: Final answer
    x = 4,493.32

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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.