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Finding the Fourth Proportional to 207,401.94, 311,148.27 and 67,174.74

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Solution

The fourth proportional to 207,401.94, 311,148.27 and 67,174.74 is: 100,776.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,401.94 : 311,148.27 = 67,174.74 : x
  2. Step 2: Convert to fraction form
    207,401.94/311,148.27 = 67,174.74/x
  3. Step 3: Cross multiply
    207,401.94x = 311,148.27 × 67,174.74
  4. Step 4: Simplify right side
    207,401.94x = 20,901,304,138.70
  5. Step 5: Solve for x
    x = 20,901,304,138.70/207,401.94
  6. Step 6: Final answer
    x = 100,776.80

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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.