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Finding the Fourth Proportional to 58,664.62, 81,023.99 and 39,768.94

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Solution

The fourth proportional to 58,664.62, 81,023.99 and 39,768.94 is: 54,926.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,664.62 : 81,023.99 = 39,768.94 : x
  2. Step 2: Convert to fraction form
    58,664.62/81,023.99 = 39,768.94/x
  3. Step 3: Cross multiply
    58,664.62x = 81,023.99 × 39,768.94
  4. Step 4: Simplify right side
    58,664.62x = 3,222,237,791.75
  5. Step 5: Solve for x
    x = 3,222,237,791.75/58,664.62
  6. Step 6: Final answer
    x = 54,926.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.