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Finding the Fourth Proportional to 61,080.67, 91,631.94 and 31,490.56

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Solution

The fourth proportional to 61,080.67, 91,631.94 and 31,490.56 is: 47,241.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,080.67 : 91,631.94 = 31,490.56 : x
  2. Step 2: Convert to fraction form
    61,080.67/91,631.94 = 31,490.56/x
  3. Step 3: Cross multiply
    61,080.67x = 91,631.94 × 31,490.56
  4. Step 4: Simplify right side
    61,080.67x = 2,885,541,104.49
  5. Step 5: Solve for x
    x = 2,885,541,104.49/61,080.67
  6. Step 6: Final answer
    x = 47,241.48

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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.