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Finding the Fourth Proportional to 69,903.97, 96,470.19 and 39,692.09

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Solution

The fourth proportional to 69,903.97, 96,470.19 and 39,692.09 is: 54,776.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,903.97 : 96,470.19 = 39,692.09 : x
  2. Step 2: Convert to fraction form
    69,903.97/96,470.19 = 39,692.09/x
  3. Step 3: Cross multiply
    69,903.97x = 96,470.19 × 39,692.09
  4. Step 4: Simplify right side
    69,903.97x = 3,829,103,704.97
  5. Step 5: Solve for x
    x = 3,829,103,704.97/69,903.97
  6. Step 6: Final answer
    x = 54,776.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.