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Finding the Fourth Proportional to 269,134.20, 403,215.30 and 156,722.40

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Solution

The fourth proportional to 269,134.20, 403,215.30 and 156,722.40 is: 234,800.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,134.20 : 403,215.30 = 156,722.40 : x
  2. Step 2: Convert to fraction form
    269,134.20/403,215.30 = 156,722.40/x
  3. Step 3: Cross multiply
    269,134.20x = 403,215.30 × 156,722.40
  4. Step 4: Simplify right side
    269,134.20x = 63,192,869,532.72
  5. Step 5: Solve for x
    x = 63,192,869,532.72/269,134.20
  6. Step 6: Final answer
    x = 234,800.59

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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.