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Finding the Fourth Proportional to 7,705,662.60, 11,561,949.90 and 2,660,593.80

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Solution

The fourth proportional to 7,705,662.60, 11,561,949.90 and 2,660,593.80 is: 3,992,083.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,705,662.60 : 11,561,949.90 = 2,660,593.80 : x
  2. Step 2: Convert to fraction form
    7,705,662.60/11,561,949.90 = 2,660,593.80/x
  3. Step 3: Cross multiply
    7,705,662.60x = 11,561,949.90 × 2,660,593.80
  4. Step 4: Simplify right side
    7,705,662.60x = 30,761,652,219,850.62
  5. Step 5: Solve for x
    x = 30,761,652,219,850.62/7,705,662.60
  6. Step 6: Final answer
    x = 3,992,083.98

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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.