Finding the Fourth Proportional to 1,912,214.57, 2,638,260.23 and 1,085,151.05
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Solution
The fourth proportional to 1,912,214.57, 2,638,260.23 and 1,085,151.05 is: 1,497,170.30
Step by Step Solution
- Step 1: Write the proportion equation
1,912,214.57 : 2,638,260.23 = 1,085,151.05 : x - Step 2: Convert to fraction form
1,912,214.57/2,638,260.23 = 1,085,151.05/x - Step 3: Cross multiply
1,912,214.57x = 2,638,260.23 × 1,085,151.05 - Step 4: Simplify right side
1,912,214.57x = 2,862,910,853,331.99 - Step 5: Solve for x
x = 2,862,910,853,331.99/1,912,214.57 - Step 6: Final answer
x = 1,497,170.30
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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.