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Finding the Fourth Proportional to 69,378.97, 104,068.46 and 16,788.46

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Solution

The fourth proportional to 69,378.97, 104,068.46 and 16,788.46 is: 25,182.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,378.97 : 104,068.46 = 16,788.46 : x
  2. Step 2: Convert to fraction form
    69,378.97/104,068.46 = 16,788.46/x
  3. Step 3: Cross multiply
    69,378.97x = 104,068.46 × 16,788.46
  4. Step 4: Simplify right side
    69,378.97x = 1,747,149,177.97
  5. Step 5: Solve for x
    x = 1,747,149,177.97/69,378.97
  6. Step 6: Final answer
    x = 25,182.69

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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.