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Finding the Fourth Proportional to 266,998.80, 400,498.20 and 162,022.80

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Solution

The fourth proportional to 266,998.80, 400,498.20 and 162,022.80 is: 243,034.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,998.80 : 400,498.20 = 162,022.80 : x
  2. Step 2: Convert to fraction form
    266,998.80/400,498.20 = 162,022.80/x
  3. Step 3: Cross multiply
    266,998.80x = 400,498.20 × 162,022.80
  4. Step 4: Simplify right side
    266,998.80x = 64,889,839,758.96
  5. Step 5: Solve for x
    x = 64,889,839,758.96/266,998.80
  6. Step 6: Final answer
    x = 243,034.20

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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.