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Finding the Fourth Proportional to 323,912.60, 485,723.10 and 124,166.60

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Solution

The fourth proportional to 323,912.60, 485,723.10 and 124,166.60 is: 186,194.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,912.60 : 485,723.10 = 124,166.60 : x
  2. Step 2: Convert to fraction form
    323,912.60/485,723.10 = 124,166.60/x
  3. Step 3: Cross multiply
    323,912.60x = 485,723.10 × 124,166.60
  4. Step 4: Simplify right side
    323,912.60x = 60,310,585,868.46
  5. Step 5: Solve for x
    x = 60,310,585,868.46/323,912.60
  6. Step 6: Final answer
    x = 186,194.01

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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.