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Finding the Fourth Proportional to 122,295.46, 168,769.46 and 73,890.66

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Solution

The fourth proportional to 122,295.46, 168,769.46 and 73,890.66 is: 101,970.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,295.46 : 168,769.46 = 73,890.66 : x
  2. Step 2: Convert to fraction form
    122,295.46/168,769.46 = 73,890.66/x
  3. Step 3: Cross multiply
    122,295.46x = 168,769.46 × 73,890.66
  4. Step 4: Simplify right side
    122,295.46x = 12,470,486,076.95
  5. Step 5: Solve for x
    x = 12,470,486,076.95/122,295.46
  6. Step 6: Final answer
    x = 101,970.15

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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.