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Finding the Fourth Proportional to 168,561.80, 253,134.30 and 109,658.60

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Solution

The fourth proportional to 168,561.80, 253,134.30 and 109,658.60 is: 164,677.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,561.80 : 253,134.30 = 109,658.60 : x
  2. Step 2: Convert to fraction form
    168,561.80/253,134.30 = 109,658.60/x
  3. Step 3: Cross multiply
    168,561.80x = 253,134.30 × 109,658.60
  4. Step 4: Simplify right side
    168,561.80x = 27,758,352,949.98
  5. Step 5: Solve for x
    x = 27,758,352,949.98/168,561.80
  6. Step 6: Final answer
    x = 164,677.60

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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.