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Finding the Fourth Proportional to 323,622.60, 485,356.14 and 165,769.80

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Solution

The fourth proportional to 323,622.60, 485,356.14 and 165,769.80 is: 248,614.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,622.60 : 485,356.14 = 165,769.80 : x
  2. Step 2: Convert to fraction form
    323,622.60/485,356.14 = 165,769.80/x
  3. Step 3: Cross multiply
    323,622.60x = 485,356.14 × 165,769.80
  4. Step 4: Simplify right side
    323,622.60x = 80,457,390,256.57
  5. Step 5: Solve for x
    x = 80,457,390,256.57/323,622.60
  6. Step 6: Final answer
    x = 248,614.87

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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.