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Finding the Fourth Proportional to 91,955.92, 137,919.84 and 43,912.24

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Solution

The fourth proportional to 91,955.92, 137,919.84 and 43,912.24 is: 65,861.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,955.92 : 137,919.84 = 43,912.24 : x
  2. Step 2: Convert to fraction form
    91,955.92/137,919.84 = 43,912.24/x
  3. Step 3: Cross multiply
    91,955.92x = 137,919.84 × 43,912.24
  4. Step 4: Simplify right side
    91,955.92x = 6,056,369,114.84
  5. Step 5: Solve for x
    x = 6,056,369,114.84/91,955.92
  6. Step 6: Final answer
    x = 65,861.66

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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.