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Finding the Fourth Proportional to 200,389.50, 300,604.17 and 74,062.86

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Solution

The fourth proportional to 200,389.50, 300,604.17 and 74,062.86 is: 111,101.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,389.50 : 300,604.17 = 74,062.86 : x
  2. Step 2: Convert to fraction form
    200,389.50/300,604.17 = 74,062.86/x
  3. Step 3: Cross multiply
    200,389.50x = 300,604.17 × 74,062.86
  4. Step 4: Simplify right side
    200,389.50x = 22,263,604,558.13
  5. Step 5: Solve for x
    x = 22,263,604,558.13/200,389.50
  6. Step 6: Final answer
    x = 111,101.65

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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.