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Finding the Fourth Proportional to 200,636.96, 300,961.94 and 74,309.04

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Solution

The fourth proportional to 200,636.96, 300,961.94 and 74,309.04 is: 111,465.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,636.96 : 300,961.94 = 74,309.04 : x
  2. Step 2: Convert to fraction form
    200,636.96/300,961.94 = 74,309.04/x
  3. Step 3: Cross multiply
    200,636.96x = 300,961.94 × 74,309.04
  4. Step 4: Simplify right side
    200,636.96x = 22,364,192,466.39
  5. Step 5: Solve for x
    x = 22,364,192,466.39/200,636.96
  6. Step 6: Final answer
    x = 111,465.97

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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.