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Finding the Fourth Proportional to 168,697.80, 252,973.80 and 84,425.40

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Solution

The fourth proportional to 168,697.80, 252,973.80 and 84,425.40 is: 126,601.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,697.80 : 252,973.80 = 84,425.40 : x
  2. Step 2: Convert to fraction form
    168,697.80/252,973.80 = 84,425.40/x
  3. Step 3: Cross multiply
    168,697.80x = 252,973.80 × 84,425.40
  4. Step 4: Simplify right side
    168,697.80x = 21,357,414,254.52
  5. Step 5: Solve for x
    x = 21,357,414,254.52/168,697.80
  6. Step 6: Final answer
    x = 126,601.62

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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.