Home / 18,698,198.57-28,056,180.24-12,949,778.42

Finding the Fourth Proportional to 18,698,198.57, 28,056,180.24 and 12,949,778.42

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Solution

The fourth proportional to 18,698,198.57, 28,056,180.24 and 12,949,778.42 is: 19,430,819.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,698,198.57 : 28,056,180.24 = 12,949,778.42 : x
  2. Step 2: Convert to fraction form
    18,698,198.57/28,056,180.24 = 12,949,778.42/x
  3. Step 3: Cross multiply
    18,698,198.57x = 28,056,180.24 × 12,949,778.42
  4. Step 4: Simplify right side
    18,698,198.57x = 363,321,317,279,301.50
  5. Step 5: Solve for x
    x = 363,321,317,279,301.50/18,698,198.57
  6. Step 6: Final answer
    x = 19,430,819.29

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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.