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Finding the Fourth Proportional to 91,393.68, 137,131.38 and 58,104.84

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Solution

The fourth proportional to 91,393.68, 137,131.38 and 58,104.84 is: 87,183.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,393.68 : 137,131.38 = 58,104.84 : x
  2. Step 2: Convert to fraction form
    91,393.68/137,131.38 = 58,104.84/x
  3. Step 3: Cross multiply
    91,393.68x = 137,131.38 × 58,104.84
  4. Step 4: Simplify right side
    91,393.68x = 7,967,996,893.88
  5. Step 5: Solve for x
    x = 7,967,996,893.88/91,393.68
  6. Step 6: Final answer
    x = 87,183.24

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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.