Home / 129,211,379.72-198,606,257.86

Finding the Third Proportional to 129,211,379.72 and 198,606,257.86

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Solution

The third proportional to 129,211,379.72 and 198,606,257.86 is: 305,270,679.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,211,379.72 : 198,606,257.86 = 198,606,257.86 : x
  2. Step 2: Convert to fraction form
    129,211,379.72/198,606,257.86 = 198,606,257.86/x
  3. Step 3: Cross multiply
    129,211,379.72x = 198,606,257.86 × 198,606,257.86
  4. Step 4: Simplify right side
    129,211,379.72x = 39,444,445,660,906,544
  5. Step 5: Solve for x
    x = 39,444,445,660,906,544/129,211,379.72
  6. Step 6: Final answer
    x = 305,270,679.31

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.