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Finding the Fourth Proportional to 167,931.20, 251,702.40 and 68,025.80

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Solution

The fourth proportional to 167,931.20, 251,702.40 and 68,025.80 is: 101,959.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,931.20 : 251,702.40 = 68,025.80 : x
  2. Step 2: Convert to fraction form
    167,931.20/251,702.40 = 68,025.80/x
  3. Step 3: Cross multiply
    167,931.20x = 251,702.40 × 68,025.80
  4. Step 4: Simplify right side
    167,931.20x = 17,122,257,121.92
  5. Step 5: Solve for x
    x = 17,122,257,121.92/167,931.20
  6. Step 6: Final answer
    x = 101,959.95

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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.