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Finding the Fourth Proportional to 168,221.40, 252,289.09 and 49,865.14

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Solution

The fourth proportional to 168,221.40, 252,289.09 and 49,865.14 is: 74,784.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,221.40 : 252,289.09 = 49,865.14 : x
  2. Step 2: Convert to fraction form
    168,221.40/252,289.09 = 49,865.14/x
  3. Step 3: Cross multiply
    168,221.40x = 252,289.09 × 49,865.14
  4. Step 4: Simplify right side
    168,221.40x = 12,580,430,793.32
  5. Step 5: Solve for x
    x = 12,580,430,793.32/168,221.40
  6. Step 6: Final answer
    x = 74,784.96

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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.