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Finding the Fourth Proportional to 439,611.10, 659,324.38 and 123,994.20

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Solution

The fourth proportional to 439,611.10, 659,324.38 and 123,994.20 is: 185,965.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,611.10 : 659,324.38 = 123,994.20 : x
  2. Step 2: Convert to fraction form
    439,611.10/659,324.38 = 123,994.20/x
  3. Step 3: Cross multiply
    439,611.10x = 659,324.38 × 123,994.20
  4. Step 4: Simplify right side
    439,611.10x = 81,752,395,122.00
  5. Step 5: Solve for x
    x = 81,752,395,122.00/439,611.10
  6. Step 6: Final answer
    x = 185,965.27

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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.