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Finding the Fourth Proportional to 144,081.39, 198,824.22 and 80,423.28

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Solution

The fourth proportional to 144,081.39, 198,824.22 and 80,423.28 is: 110,979.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,081.39 : 198,824.22 = 80,423.28 : x
  2. Step 2: Convert to fraction form
    144,081.39/198,824.22 = 80,423.28/x
  3. Step 3: Cross multiply
    144,081.39x = 198,824.22 × 80,423.28
  4. Step 4: Simplify right side
    144,081.39x = 15,990,095,915.84
  5. Step 5: Solve for x
    x = 15,990,095,915.84/144,081.39
  6. Step 6: Final answer
    x = 110,979.61

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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.