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Finding the Fourth Proportional to 57,222.70, 85,832.70 and 15,669.70

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Solution

The fourth proportional to 57,222.70, 85,832.70 and 15,669.70 is: 23,504.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,222.70 : 85,832.70 = 15,669.70 : x
  2. Step 2: Convert to fraction form
    57,222.70/85,832.70 = 15,669.70/x
  3. Step 3: Cross multiply
    57,222.70x = 85,832.70 × 15,669.70
  4. Step 4: Simplify right side
    57,222.70x = 1,344,972,659.19
  5. Step 5: Solve for x
    x = 1,344,972,659.19/57,222.70
  6. Step 6: Final answer
    x = 23,504.18

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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.