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Finding the Fourth Proportional to 168,289.80, 252,379.92 and 55,939.90

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Solution

The fourth proportional to 168,289.80, 252,379.92 and 55,939.90 is: 83,891.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,289.80 : 252,379.92 = 55,939.90 : x
  2. Step 2: Convert to fraction form
    168,289.80/252,379.92 = 55,939.90/x
  3. Step 3: Cross multiply
    168,289.80x = 252,379.92 × 55,939.90
  4. Step 4: Simplify right side
    168,289.80x = 14,118,107,486.81
  5. Step 5: Solve for x
    x = 14,118,107,486.81/168,289.80
  6. Step 6: Final answer
    x = 83,891.64

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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.