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Finding the Fourth Proportional to 91,446.75, 137,049.84 and 38,791.08

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Solution

The fourth proportional to 91,446.75, 137,049.84 and 38,791.08 is: 58,135.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,446.75 : 137,049.84 = 38,791.08 : x
  2. Step 2: Convert to fraction form
    91,446.75/137,049.84 = 38,791.08/x
  3. Step 3: Cross multiply
    91,446.75x = 137,049.84 × 38,791.08
  4. Step 4: Simplify right side
    91,446.75x = 5,316,311,307.43
  5. Step 5: Solve for x
    x = 5,316,311,307.43/91,446.75
  6. Step 6: Final answer
    x = 58,135.60

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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.