Finding the Fourth Proportional to 1,203,968.21, 1,806,138.41 and 405,187.11
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Solution
The fourth proportional to 1,203,968.21, 1,806,138.41 and 405,187.11 is: 607,843.29
Step by Step Solution
- Step 1: Write the proportion equation
1,203,968.21 : 1,806,138.41 = 405,187.11 : x - Step 2: Convert to fraction form
1,203,968.21/1,806,138.41 = 405,187.11/x - Step 3: Cross multiply
1,203,968.21x = 1,806,138.41 × 405,187.11 - Step 4: Simplify right side
1,203,968.21x = 731,824,000,581.96 - Step 5: Solve for x
x = 731,824,000,581.96/1,203,968.21 - Step 6: Final answer
x = 607,843.29
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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.