Finding the Fourth Proportional to 1,280,638.13, 1,767,286.09 and 699,872.81
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Solution
The fourth proportional to 1,280,638.13, 1,767,286.09 and 699,872.81 is: 965,827.47
Step by Step Solution
- Step 1: Write the proportion equation
1,280,638.13 : 1,767,286.09 = 699,872.81 : x - Step 2: Convert to fraction form
1,280,638.13/1,767,286.09 = 699,872.81/x - Step 3: Cross multiply
1,280,638.13x = 1,767,286.09 × 699,872.81 - Step 4: Simplify right side
1,280,638.13x = 1,236,875,481,882.21 - Step 5: Solve for x
x = 1,236,875,481,882.21/1,280,638.13 - Step 6: Final answer
x = 965,827.47
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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.