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Finding the Fourth Proportional to 220,832.76, 330,821.46 and 132,156.12

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Solution

The fourth proportional to 220,832.76, 330,821.46 and 132,156.12 is: 197,978.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,832.76 : 330,821.46 = 132,156.12 : x
  2. Step 2: Convert to fraction form
    220,832.76/330,821.46 = 132,156.12/x
  3. Step 3: Cross multiply
    220,832.76x = 330,821.46 × 132,156.12
  4. Step 4: Simplify right side
    220,832.76x = 43,720,080,566.34
  5. Step 5: Solve for x
    x = 43,720,080,566.34/220,832.76
  6. Step 6: Final answer
    x = 197,978.24

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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.