Finding the Fourth Proportional to 853,632,163.70, 1,198,309,891.90 and 853,632,163.70
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Solution
The fourth proportional to 853,632,163.70, 1,198,309,891.90 and 853,632,163.70 is: 1,198,309,891.90
Step by Step Solution
- Step 1: Write the proportion equation
853,632,163.70 : 1,198,309,891.90 = 853,632,163.70 : x - Step 2: Convert to fraction form
853,632,163.70/1,198,309,891.90 = 853,632,163.70/x - Step 3: Cross multiply
853,632,163.70x = 1,198,309,891.90 × 853,632,163.70 - Step 4: Simplify right side
853,632,163.70x = 1,022,915,865,805,710,208 - Step 5: Solve for x
x = 1,022,915,865,805,710,208/853,632,163.70 - Step 6: Final answer
x = 1,198,309,891.90
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.