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Finding the Fourth Proportional to 168,011.20, 252,016.80 and 164,074.60

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Solution

The fourth proportional to 168,011.20, 252,016.80 and 164,074.60 is: 246,111.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,011.20 : 252,016.80 = 164,074.60 : x
  2. Step 2: Convert to fraction form
    168,011.20/252,016.80 = 164,074.60/x
  3. Step 3: Cross multiply
    168,011.20x = 252,016.80 × 164,074.60
  4. Step 4: Simplify right side
    168,011.20x = 41,349,555,653.28
  5. Step 5: Solve for x
    x = 41,349,555,653.28/168,011.20
  6. Step 6: Final answer
    x = 246,111.90

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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.