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Finding the Fourth Proportional to 192,912.60, 289,402.92 and 66,542.88

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Solution

The fourth proportional to 192,912.60, 289,402.92 and 66,542.88 is: 99,826.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,912.60 : 289,402.92 = 66,542.88 : x
  2. Step 2: Convert to fraction form
    192,912.60/289,402.92 = 66,542.88/x
  3. Step 3: Cross multiply
    192,912.60x = 289,402.92 × 66,542.88
  4. Step 4: Simplify right side
    192,912.60x = 19,257,703,777.21
  5. Step 5: Solve for x
    x = 19,257,703,777.21/192,912.60
  6. Step 6: Final answer
    x = 99,826.05

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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.