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Finding the Fourth Proportional to 439,998.75, 607,198.29 and 238,794.75

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Solution

The fourth proportional to 439,998.75, 607,198.29 and 238,794.75 is: 329,536.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,998.75 : 607,198.29 = 238,794.75 : x
  2. Step 2: Convert to fraction form
    439,998.75/607,198.29 = 238,794.75/x
  3. Step 3: Cross multiply
    439,998.75x = 607,198.29 × 238,794.75
  4. Step 4: Simplify right side
    439,998.75x = 144,995,763,860.98
  5. Step 5: Solve for x
    x = 144,995,763,860.98/439,998.75
  6. Step 6: Final answer
    x = 329,536.76

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Double scale
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Similar ratio
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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.