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Finding the Fourth Proportional to 53,868.51, 80,692.61 and 43,908.75

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Solution

The fourth proportional to 53,868.51, 80,692.61 and 43,908.75 is: 65,773.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,868.51 : 80,692.61 = 43,908.75 : x
  2. Step 2: Convert to fraction form
    53,868.51/80,692.61 = 43,908.75/x
  3. Step 3: Cross multiply
    53,868.51x = 80,692.61 × 43,908.75
  4. Step 4: Simplify right side
    53,868.51x = 3,543,111,419.79
  5. Step 5: Solve for x
    x = 3,543,111,419.79/53,868.51
  6. Step 6: Final answer
    x = 65,773.33

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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.