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Finding the Fourth Proportional to 207,768.43, 311,685.45 and 67,494.25

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Solution

The fourth proportional to 207,768.43, 311,685.45 and 67,494.25 is: 101,252.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,768.43 : 311,685.45 = 67,494.25 : x
  2. Step 2: Convert to fraction form
    207,768.43/311,685.45 = 67,494.25/x
  3. Step 3: Cross multiply
    207,768.43x = 311,685.45 × 67,494.25
  4. Step 4: Simplify right side
    207,768.43x = 21,036,975,683.66
  5. Step 5: Solve for x
    x = 21,036,975,683.66/207,768.43
  6. Step 6: Final answer
    x = 101,252.03

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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.