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Finding the Fourth Proportional to 392,362.10, 588,548.58 and 111,879.32

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Solution

The fourth proportional to 392,362.10, 588,548.58 and 111,879.32 is: 167,820.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,362.10 : 588,548.58 = 111,879.32 : x
  2. Step 2: Convert to fraction form
    392,362.10/588,548.58 = 111,879.32/x
  3. Step 3: Cross multiply
    392,362.10x = 588,548.58 × 111,879.32
  4. Step 4: Simplify right side
    392,362.10x = 65,846,414,917.37
  5. Step 5: Solve for x
    x = 65,846,414,917.37/392,362.10
  6. Step 6: Final answer
    x = 167,820.53

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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.