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Finding the Fourth Proportional to 269,722.20, 404,145.90 and 169,703.40

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Solution

The fourth proportional to 269,722.20, 404,145.90 and 169,703.40 is: 254,279.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,722.20 : 404,145.90 = 169,703.40 : x
  2. Step 2: Convert to fraction form
    269,722.20/404,145.90 = 169,703.40/x
  3. Step 3: Cross multiply
    269,722.20x = 404,145.90 × 169,703.40
  4. Step 4: Simplify right side
    269,722.20x = 68,584,933,326.06
  5. Step 5: Solve for x
    x = 68,584,933,326.06/269,722.20
  6. Step 6: Final answer
    x = 254,279.90

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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.