Finding the Third Proportional to 19,860 and 30,722
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Solution
The third proportional to 19,860 and 30,722 is: 47,524.74
Step by Step Solution
- Step 1: Write the proportion equation
19,860 : 30,722 = 30,722 : x - Step 2: Convert to fraction form
19,860/30,722 = 30,722/x - Step 3: Cross multiply
19,860x = 30,722 × 30,722 - Step 4: Simplify right side
19,860x = 943,841,284 - Step 5: Solve for x
x = 943,841,284/19,860 - Step 6: Final answer
x = 47,524.74
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Why These Related Problems?
These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.