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Finding the Fourth Proportional to 207,324.40, 310,986.60 and 67,079.56

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Solution

The fourth proportional to 207,324.40, 310,986.60 and 67,079.56 is: 100,619.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,324.40 : 310,986.60 = 67,079.56 : x
  2. Step 2: Convert to fraction form
    207,324.40/310,986.60 = 67,079.56/x
  3. Step 3: Cross multiply
    207,324.40x = 310,986.60 × 67,079.56
  4. Step 4: Simplify right side
    207,324.40x = 20,860,844,293.90
  5. Step 5: Solve for x
    x = 20,860,844,293.90/207,324.40
  6. Step 6: Final answer
    x = 100,619.34

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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.