Finding the Fourth Proportional to 1,189,455.11, 1,641,449.84 and 645,591.09
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Solution
The fourth proportional to 1,189,455.11, 1,641,449.84 and 645,591.09 is: 890,916.68
Step by Step Solution
- Step 1: Write the proportion equation
1,189,455.11 : 1,641,449.84 = 645,591.09 : x - Step 2: Convert to fraction form
1,189,455.11/1,641,449.84 = 645,591.09/x - Step 3: Cross multiply
1,189,455.11x = 1,641,449.84 × 645,591.09 - Step 4: Simplify right side
1,189,455.11x = 1,059,705,388,157.97 - Step 5: Solve for x
x = 1,059,705,388,157.97/1,189,455.11 - Step 6: Final answer
x = 890,916.68
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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.