Finding the Third Proportional to 690,784 and 1,486,542
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Solution
The third proportional to 690,784 and 1,486,542 is: 3,198,984.22
Step by Step Solution
- Step 1: Write the proportion equation
690,784 : 1,486,542 = 1,486,542 : x - Step 2: Convert to fraction form
690,784/1,486,542 = 1,486,542/x - Step 3: Cross multiply
690,784x = 1,486,542 × 1,486,542 - Step 4: Simplify right side
690,784x = 2,209,807,117,764 - Step 5: Solve for x
x = 2,209,807,117,764/690,784 - Step 6: Final answer
x = 3,198,984.22
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Why These Related Problems?
These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.