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Finding the Fourth Proportional to 57,771.63, 86,657.18 and 18,331.82

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Solution

The fourth proportional to 57,771.63, 86,657.18 and 18,331.82 is: 27,497.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,771.63 : 86,657.18 = 18,331.82 : x
  2. Step 2: Convert to fraction form
    57,771.63/86,657.18 = 18,331.82/x
  3. Step 3: Cross multiply
    57,771.63x = 86,657.18 × 18,331.82
  4. Step 4: Simplify right side
    57,771.63x = 1,588,583,625.49
  5. Step 5: Solve for x
    x = 1,588,583,625.49/57,771.63
  6. Step 6: Final answer
    x = 27,497.64

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1.5x scale

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.