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Finding the Fourth Proportional to 91,682.88, 137,531.36 and 39,092.64

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Solution

The fourth proportional to 91,682.88, 137,531.36 and 39,092.64 is: 58,641.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,682.88 : 137,531.36 = 39,092.64 : x
  2. Step 2: Convert to fraction form
    91,682.88/137,531.36 = 39,092.64/x
  3. Step 3: Cross multiply
    91,682.88x = 137,531.36 × 39,092.64
  4. Step 4: Simplify right side
    91,682.88x = 5,376,463,945.19
  5. Step 5: Solve for x
    x = 5,376,463,945.19/91,682.88
  6. Step 6: Final answer
    x = 58,641.96

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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.