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Finding the Fourth Proportional to 452,375.40, 678,131.10 and 167,989.80

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Solution

The fourth proportional to 452,375.40, 678,131.10 and 167,989.80 is: 251,824.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,375.40 : 678,131.10 = 167,989.80 : x
  2. Step 2: Convert to fraction form
    452,375.40/678,131.10 = 167,989.80/x
  3. Step 3: Cross multiply
    452,375.40x = 678,131.10 × 167,989.80
  4. Step 4: Simplify right side
    452,375.40x = 113,919,107,862.78
  5. Step 5: Solve for x
    x = 113,919,107,862.78/452,375.40
  6. Step 6: Final answer
    x = 251,824.28

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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.