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Finding the Fourth Proportional to 122,209.02, 168,648.21 and 68,494.02

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Solution

The fourth proportional to 122,209.02, 168,648.21 and 68,494.02 is: 94,521.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,209.02 : 168,648.21 = 68,494.02 : x
  2. Step 2: Convert to fraction form
    122,209.02/168,648.21 = 68,494.02/x
  3. Step 3: Cross multiply
    122,209.02x = 168,648.21 × 68,494.02
  4. Step 4: Simplify right side
    122,209.02x = 11,551,393,868.70
  5. Step 5: Solve for x
    x = 11,551,393,868.70/122,209.02
  6. Step 6: Final answer
    x = 94,521.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.