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Finding the Fourth Proportional to 323,903.97, 485,944.22 and 99,259.43

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Solution

The fourth proportional to 323,903.97, 485,944.22 and 99,259.43 is: 148,916.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,903.97 : 485,944.22 = 99,259.43 : x
  2. Step 2: Convert to fraction form
    323,903.97/485,944.22 = 99,259.43/x
  3. Step 3: Cross multiply
    323,903.97x = 485,944.22 × 99,259.43
  4. Step 4: Simplify right side
    323,903.97x = 48,234,546,288.99
  5. Step 5: Solve for x
    x = 48,234,546,288.99/323,903.97
  6. Step 6: Final answer
    x = 148,916.19

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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.