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Finding the Fourth Proportional to 39,874.72, 59,835.60 and 14,571.96

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Solution

The fourth proportional to 39,874.72, 59,835.60 and 14,571.96 is: 21,866.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,874.72 : 59,835.60 = 14,571.96 : x
  2. Step 2: Convert to fraction form
    39,874.72/59,835.60 = 14,571.96/x
  3. Step 3: Cross multiply
    39,874.72x = 59,835.60 × 14,571.96
  4. Step 4: Simplify right side
    39,874.72x = 871,921,969.78
  5. Step 5: Solve for x
    x = 871,921,969.78/39,874.72
  6. Step 6: Final answer
    x = 21,866.54

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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.