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Finding the Fourth Proportional to 465,622.80, 698,434.20 and 323,905.20

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Solution

The fourth proportional to 465,622.80, 698,434.20 and 323,905.20 is: 485,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,622.80 : 698,434.20 = 323,905.20 : x
  2. Step 2: Convert to fraction form
    465,622.80/698,434.20 = 323,905.20/x
  3. Step 3: Cross multiply
    465,622.80x = 698,434.20 × 323,905.20
  4. Step 4: Simplify right side
    465,622.80x = 226,226,469,237.84
  5. Step 5: Solve for x
    x = 226,226,469,237.84/465,622.80
  6. Step 6: Final answer
    x = 485,857.80

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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.