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Finding the Fourth Proportional to 139,912.92, 192,990.60 and 114,456.24

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Solution

The fourth proportional to 139,912.92, 192,990.60 and 114,456.24 is: 157,876.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,912.92 : 192,990.60 = 114,456.24 : x
  2. Step 2: Convert to fraction form
    139,912.92/192,990.60 = 114,456.24/x
  3. Step 3: Cross multiply
    139,912.92x = 192,990.60 × 114,456.24
  4. Step 4: Simplify right side
    139,912.92x = 22,088,978,431.34
  5. Step 5: Solve for x
    x = 22,088,978,431.34/139,912.92
  6. Step 6: Final answer
    x = 157,876.62

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1.5x scale

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.