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Finding the Fourth Proportional to 201,062.20, 301,583.70 and 67,929.40

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Solution

The fourth proportional to 201,062.20, 301,583.70 and 67,929.40 is: 101,890.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,062.20 : 301,583.70 = 67,929.40 : x
  2. Step 2: Convert to fraction form
    201,062.20/301,583.70 = 67,929.40/x
  3. Step 3: Cross multiply
    201,062.20x = 301,583.70 × 67,929.40
  4. Step 4: Simplify right side
    201,062.20x = 20,486,399,790.78
  5. Step 5: Solve for x
    x = 20,486,399,790.78/201,062.20
  6. Step 6: Final answer
    x = 101,890.86

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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.