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Finding the Fourth Proportional to 41,487.80, 62,223.60 and 13,785.80

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Solution

The fourth proportional to 41,487.80, 62,223.60 and 13,785.80 is: 20,676.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,487.80 : 62,223.60 = 13,785.80 : x
  2. Step 2: Convert to fraction form
    41,487.80/62,223.60 = 13,785.80/x
  3. Step 3: Cross multiply
    41,487.80x = 62,223.60 × 13,785.80
  4. Step 4: Simplify right side
    41,487.80x = 857,802,104.88
  5. Step 5: Solve for x
    x = 857,802,104.88/41,487.80
  6. Step 6: Final answer
    x = 20,676.01

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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.