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Finding the Fourth Proportional to 57,771.88, 86,662.74 and 16,218.88

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Solution

The fourth proportional to 57,771.88, 86,662.74 and 16,218.88 is: 24,329.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,771.88 : 86,662.74 = 16,218.88 : x
  2. Step 2: Convert to fraction form
    57,771.88/86,662.74 = 16,218.88/x
  3. Step 3: Cross multiply
    57,771.88x = 86,662.74 × 16,218.88
  4. Step 4: Simplify right side
    57,771.88x = 1,405,572,580.53
  5. Step 5: Solve for x
    x = 1,405,572,580.53/57,771.88
  6. Step 6: Final answer
    x = 24,329.70

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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.