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Finding the Fourth Proportional to 122,369.41, 168,872.39 and 68,658.31

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Solution

The fourth proportional to 122,369.41, 168,872.39 and 68,658.31 is: 94,749.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,369.41 : 168,872.39 = 68,658.31 : x
  2. Step 2: Convert to fraction form
    122,369.41/168,872.39 = 68,658.31/x
  3. Step 3: Cross multiply
    122,369.41x = 168,872.39 × 68,658.31
  4. Step 4: Simplify right side
    122,369.41x = 11,594,492,903.06
  5. Step 5: Solve for x
    x = 11,594,492,903.06/122,369.41
  6. Step 6: Final answer
    x = 94,749.93

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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.