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Finding the Fourth Proportional to 192,718.60, 289,034.70 and 126,622.60

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Solution

The fourth proportional to 192,718.60, 289,034.70 and 126,622.60 is: 189,905.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,718.60 : 289,034.70 = 126,622.60 : x
  2. Step 2: Convert to fraction form
    192,718.60/289,034.70 = 126,622.60/x
  3. Step 3: Cross multiply
    192,718.60x = 289,034.70 × 126,622.60
  4. Step 4: Simplify right side
    192,718.60x = 36,598,325,204.22
  5. Step 5: Solve for x
    x = 36,598,325,204.22/192,718.60
  6. Step 6: Final answer
    x = 189,905.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.