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Finding the Fourth Proportional to 122,409.94, 168,926.97 and 67,963

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Solution

The fourth proportional to 122,409.94, 168,926.97 and 67,963 is: 93,789.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,409.94 : 168,926.97 = 67,963 : x
  2. Step 2: Convert to fraction form
    122,409.94/168,926.97 = 67,963/x
  3. Step 3: Cross multiply
    122,409.94x = 168,926.97 × 67,963
  4. Step 4: Simplify right side
    122,409.94x = 11,480,783,662.11
  5. Step 5: Solve for x
    x = 11,480,783,662.11/122,409.94
  6. Step 6: Final answer
    x = 93,789.64

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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.