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Finding the Fourth Proportional to 39,786.03, 59,641.74 and 13,472.37

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Solution

The fourth proportional to 39,786.03, 59,641.74 and 13,472.37 is: 20,195.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,786.03 : 59,641.74 = 13,472.37 : x
  2. Step 2: Convert to fraction form
    39,786.03/59,641.74 = 13,472.37/x
  3. Step 3: Cross multiply
    39,786.03x = 59,641.74 × 13,472.37
  4. Step 4: Simplify right side
    39,786.03x = 803,515,588.72
  5. Step 5: Solve for x
    x = 803,515,588.72/39,786.03
  6. Step 6: Final answer
    x = 20,195.92

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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.