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Finding the Fourth Proportional to 61,285.56, 91,933.64 and 16,912.32

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Solution

The fourth proportional to 61,285.56, 91,933.64 and 16,912.32 is: 25,369.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,285.56 : 91,933.64 = 16,912.32 : x
  2. Step 2: Convert to fraction form
    61,285.56/91,933.64 = 16,912.32/x
  3. Step 3: Cross multiply
    61,285.56x = 91,933.64 × 16,912.32
  4. Step 4: Simplify right side
    61,285.56x = 1,554,810,772.55
  5. Step 5: Solve for x
    x = 1,554,810,772.55/61,285.56
  6. Step 6: Final answer
    x = 25,369.94

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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.