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Finding the Fourth Proportional to 57,940.11, 86,910.98 and 16,387.11

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Solution

The fourth proportional to 57,940.11, 86,910.98 and 16,387.11 is: 24,580.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,940.11 : 86,910.98 = 16,387.11 : x
  2. Step 2: Convert to fraction form
    57,940.11/86,910.98 = 16,387.11/x
  3. Step 3: Cross multiply
    57,940.11x = 86,910.98 × 16,387.11
  4. Step 4: Simplify right side
    57,940.11x = 1,424,219,707.53
  5. Step 5: Solve for x
    x = 1,424,219,707.53/57,940.11
  6. Step 6: Final answer
    x = 24,580.89

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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.