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Finding the Fourth Proportional to 168,542.55, 252,716.01 and 79,795.30

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Solution

The fourth proportional to 168,542.55, 252,716.01 and 79,795.30 is: 119,646.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,542.55 : 252,716.01 = 79,795.30 : x
  2. Step 2: Convert to fraction form
    168,542.55/252,716.01 = 79,795.30/x
  3. Step 3: Cross multiply
    168,542.55x = 252,716.01 × 79,795.30
  4. Step 4: Simplify right side
    168,542.55x = 20,165,549,832.75
  5. Step 5: Solve for x
    x = 20,165,549,832.75/168,542.55
  6. Step 6: Final answer
    x = 119,646.64

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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.