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Finding the Fourth Proportional to 439,697.35, 659,686.13 and 196,500.80

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Solution

The fourth proportional to 439,697.35, 659,686.13 and 196,500.80 is: 294,813.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,697.35 : 659,686.13 = 196,500.80 : x
  2. Step 2: Convert to fraction form
    439,697.35/659,686.13 = 196,500.80/x
  3. Step 3: Cross multiply
    439,697.35x = 659,686.13 × 196,500.80
  4. Step 4: Simplify right side
    439,697.35x = 129,628,852,293.90
  5. Step 5: Solve for x
    x = 129,628,852,293.90/439,697.35
  6. Step 6: Final answer
    x = 294,813.81

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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.