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Finding the Fourth Proportional to 168,011.10, 252,061.20 and 73,200.60

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Solution

The fourth proportional to 168,011.10, 252,061.20 and 73,200.60 is: 109,820.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,011.10 : 252,061.20 = 73,200.60 : x
  2. Step 2: Convert to fraction form
    168,011.10/252,061.20 = 73,200.60/x
  3. Step 3: Cross multiply
    168,011.10x = 252,061.20 × 73,200.60
  4. Step 4: Simplify right side
    168,011.10x = 18,451,031,076.72
  5. Step 5: Solve for x
    x = 18,451,031,076.72/168,011.10
  6. Step 6: Final answer
    x = 109,820.31

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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.