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Finding the Fourth Proportional to 61,313.86, 91,956.21 and 16,939.63

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Solution

The fourth proportional to 61,313.86, 91,956.21 and 16,939.63 is: 25,405.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,313.86 : 91,956.21 = 16,939.63 : x
  2. Step 2: Convert to fraction form
    61,313.86/91,956.21 = 16,939.63/x
  3. Step 3: Cross multiply
    61,313.86x = 91,956.21 × 16,939.63
  4. Step 4: Simplify right side
    61,313.86x = 1,557,704,173.60
  5. Step 5: Solve for x
    x = 1,557,704,173.60/61,313.86
  6. Step 6: Final answer
    x = 25,405.42

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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.