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Finding the Fourth Proportional to 57,704.40, 86,564.70 and 18,257.40

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Solution

The fourth proportional to 57,704.40, 86,564.70 and 18,257.40 is: 27,388.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,704.40 : 86,564.70 = 18,257.40 : x
  2. Step 2: Convert to fraction form
    57,704.40/86,564.70 = 18,257.40/x
  3. Step 3: Cross multiply
    57,704.40x = 86,564.70 × 18,257.40
  4. Step 4: Simplify right side
    57,704.40x = 1,580,446,353.78
  5. Step 5: Solve for x
    x = 1,580,446,353.78/57,704.40
  6. Step 6: Final answer
    x = 27,388.66

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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.