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Finding the Fourth Proportional to 162,908.43, 224,819.70 and 91,285.80

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Solution

The fourth proportional to 162,908.43, 224,819.70 and 91,285.80 is: 125,977.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,908.43 : 224,819.70 = 91,285.80 : x
  2. Step 2: Convert to fraction form
    162,908.43/224,819.70 = 91,285.80/x
  3. Step 3: Cross multiply
    162,908.43x = 224,819.70 × 91,285.80
  4. Step 4: Simplify right side
    162,908.43x = 20,522,846,170.26
  5. Step 5: Solve for x
    x = 20,522,846,170.26/162,908.43
  6. Step 6: Final answer
    x = 125,977.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.