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Finding the Fourth Proportional to 356,722.20, 535,083.30 and 146,251.80

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Solution

The fourth proportional to 356,722.20, 535,083.30 and 146,251.80 is: 219,377.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,722.20 : 535,083.30 = 146,251.80 : x
  2. Step 2: Convert to fraction form
    356,722.20/535,083.30 = 146,251.80/x
  3. Step 3: Cross multiply
    356,722.20x = 535,083.30 × 146,251.80
  4. Step 4: Simplify right side
    356,722.20x = 78,256,895,774.94
  5. Step 5: Solve for x
    x = 78,256,895,774.94/356,722.20
  6. Step 6: Final answer
    x = 219,377.70

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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.