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Finding the Fourth Proportional to 92,709.50, 127,939.12 and 50,268.02

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Solution

The fourth proportional to 92,709.50, 127,939.12 and 50,268.02 is: 69,369.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,709.50 : 127,939.12 = 50,268.02 : x
  2. Step 2: Convert to fraction form
    92,709.50/127,939.12 = 50,268.02/x
  3. Step 3: Cross multiply
    92,709.50x = 127,939.12 × 50,268.02
  4. Step 4: Simplify right side
    92,709.50x = 6,431,246,242.94
  5. Step 5: Solve for x
    x = 6,431,246,242.94/92,709.50
  6. Step 6: Final answer
    x = 69,369.87

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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.