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Finding the Fourth Proportional to 323,984.38, 485,980.89 and 113,628.46

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Solution

The fourth proportional to 323,984.38, 485,980.89 and 113,628.46 is: 170,444.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,984.38 : 485,980.89 = 113,628.46 : x
  2. Step 2: Convert to fraction form
    323,984.38/485,980.89 = 113,628.46/x
  3. Step 3: Cross multiply
    323,984.38x = 485,980.89 × 113,628.46
  4. Step 4: Simplify right side
    323,984.38x = 55,221,260,120.13
  5. Step 5: Solve for x
    x = 55,221,260,120.13/323,984.38
  6. Step 6: Final answer
    x = 170,444.21

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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.