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Finding the Fourth Proportional to 192,751.70, 289,127.55 and 68,105.30

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Solution

The fourth proportional to 192,751.70, 289,127.55 and 68,105.30 is: 102,157.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,751.70 : 289,127.55 = 68,105.30 : x
  2. Step 2: Convert to fraction form
    192,751.70/289,127.55 = 68,105.30/x
  3. Step 3: Cross multiply
    192,751.70x = 289,127.55 × 68,105.30
  4. Step 4: Simplify right side
    192,751.70x = 19,691,118,531.02
  5. Step 5: Solve for x
    x = 19,691,118,531.02/192,751.70
  6. Step 6: Final answer
    x = 102,157.95

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1.5x scale

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.