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Finding the Fourth Proportional to 168,896.80, 253,272.30 and 84,624.40

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Solution

The fourth proportional to 168,896.80, 253,272.30 and 84,624.40 is: 126,900.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,896.80 : 253,272.30 = 84,624.40 : x
  2. Step 2: Convert to fraction form
    168,896.80/253,272.30 = 84,624.40/x
  3. Step 3: Cross multiply
    168,896.80x = 253,272.30 × 84,624.40
  4. Step 4: Simplify right side
    168,896.80x = 21,433,016,424.12
  5. Step 5: Solve for x
    x = 21,433,016,424.12/168,896.80
  6. Step 6: Final answer
    x = 126,900.07

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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.