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Finding the Fourth Proportional to 266,817.20, 400,223.61 and 108,934.93

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Solution

The fourth proportional to 266,817.20, 400,223.61 and 108,934.93 is: 163,401.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,817.20 : 400,223.61 = 108,934.93 : x
  2. Step 2: Convert to fraction form
    266,817.20/400,223.61 = 108,934.93/x
  3. Step 3: Cross multiply
    266,817.20x = 400,223.61 × 108,934.93
  4. Step 4: Simplify right side
    266,817.20x = 43,598,329,939.14
  5. Step 5: Solve for x
    x = 43,598,329,939.14/266,817.20
  6. Step 6: Final answer
    x = 163,401.50

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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.