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Finding the Fourth Proportional to 69,941.52, 104,894.64 and 20,021.94

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Solution

The fourth proportional to 69,941.52, 104,894.64 and 20,021.94 is: 30,027.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,941.52 : 104,894.64 = 20,021.94 : x
  2. Step 2: Convert to fraction form
    69,941.52/104,894.64 = 20,021.94/x
  3. Step 3: Cross multiply
    69,941.52x = 104,894.64 × 20,021.94
  4. Step 4: Simplify right side
    69,941.52x = 2,100,194,188.40
  5. Step 5: Solve for x
    x = 2,100,194,188.40/69,941.52
  6. Step 6: Final answer
    x = 30,027.86

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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.