Finding the Fourth Proportional to 1,397,493.05, 1,928,609.73 and 853,540.79
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Solution
The fourth proportional to 1,397,493.05, 1,928,609.73 and 853,540.79 is: 1,177,928.63
Step by Step Solution
- Step 1: Write the proportion equation
1,397,493.05 : 1,928,609.73 = 853,540.79 : x - Step 2: Convert to fraction form
1,397,493.05/1,928,609.73 = 853,540.79/x - Step 3: Cross multiply
1,397,493.05x = 1,928,609.73 × 853,540.79 - Step 4: Simplify right side
1,397,493.05x = 1,646,147,062,902.84 - Step 5: Solve for x
x = 1,646,147,062,902.84/1,397,493.05 - Step 6: Final answer
x = 1,177,928.63
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.