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Finding the Fourth Proportional to 61,115.76, 91,684.44 and 31,525.56

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Solution

The fourth proportional to 61,115.76, 91,684.44 and 31,525.56 is: 47,293.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,115.76 : 91,684.44 = 31,525.56 : x
  2. Step 2: Convert to fraction form
    61,115.76/91,684.44 = 31,525.56/x
  3. Step 3: Cross multiply
    61,115.76x = 91,684.44 × 31,525.56
  4. Step 4: Simplify right side
    61,115.76x = 2,890,403,314.29
  5. Step 5: Solve for x
    x = 2,890,403,314.29/61,115.76
  6. Step 6: Final answer
    x = 47,293.91

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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.