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Finding the Fourth Proportional to 123,790.92, 170,832.34 and 67,202.29

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Solution

The fourth proportional to 123,790.92, 170,832.34 and 67,202.29 is: 92,739.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,790.92 : 170,832.34 = 67,202.29 : x
  2. Step 2: Convert to fraction form
    123,790.92/170,832.34 = 67,202.29/x
  3. Step 3: Cross multiply
    123,790.92x = 170,832.34 × 67,202.29
  4. Step 4: Simplify right side
    123,790.92x = 11,480,324,454.06
  5. Step 5: Solve for x
    x = 11,480,324,454.06/123,790.92
  6. Step 6: Final answer
    x = 92,739.63

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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.