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Finding the Fourth Proportional to 57,992.98, 86,964.86 and 20,562.48

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Solution

The fourth proportional to 57,992.98, 86,964.86 and 20,562.48 is: 30,834.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,992.98 : 86,964.86 = 20,562.48 : x
  2. Step 2: Convert to fraction form
    57,992.98/86,964.86 = 20,562.48/x
  3. Step 3: Cross multiply
    57,992.98x = 86,964.86 × 20,562.48
  4. Step 4: Simplify right side
    57,992.98x = 1,788,213,194.45
  5. Step 5: Solve for x
    x = 1,788,213,194.45/57,992.98
  6. Step 6: Final answer
    x = 30,834.99

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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.