Finding the Fourth Proportional to 1,278,957.95, 1,916,770.94 and 519,912.75
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Solution
The fourth proportional to 1,278,957.95, 1,916,770.94 and 519,912.75 is: 779,191.88
Step by Step Solution
- Step 1: Write the proportion equation
1,278,957.95 : 1,916,770.94 = 519,912.75 : x - Step 2: Convert to fraction form
1,278,957.95/1,916,770.94 = 519,912.75/x - Step 3: Cross multiply
1,278,957.95x = 1,916,770.94 × 519,912.75 - Step 4: Simplify right side
1,278,957.95x = 996,553,651,682.57 - Step 5: Solve for x
x = 996,553,651,682.57/1,278,957.95 - Step 6: Final answer
x = 779,191.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.