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Finding the Fourth Proportional to 266,790.94, 400,186.92 and 67,109.98

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Solution

The fourth proportional to 266,790.94, 400,186.92 and 67,109.98 is: 100,665.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,790.94 : 400,186.92 = 67,109.98 : x
  2. Step 2: Convert to fraction form
    266,790.94/400,186.92 = 67,109.98/x
  3. Step 3: Cross multiply
    266,790.94x = 400,186.92 × 67,109.98
  4. Step 4: Simplify right side
    266,790.94x = 26,856,536,197.46
  5. Step 5: Solve for x
    x = 26,856,536,197.46/266,790.94
  6. Step 6: Final answer
    x = 100,665.10

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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.