Finding the Fourth Proportional to 1,131,192.63, 1,561,005.95 and 621,891.09
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Solution
The fourth proportional to 1,131,192.63, 1,561,005.95 and 621,891.09 is: 858,187.78
Step by Step Solution
- Step 1: Write the proportion equation
1,131,192.63 : 1,561,005.95 = 621,891.09 : x - Step 2: Convert to fraction form
1,131,192.63/1,561,005.95 = 621,891.09/x - Step 3: Cross multiply
1,131,192.63x = 1,561,005.95 × 621,891.09 - Step 4: Simplify right side
1,131,192.63x = 970,775,688,632.53 - Step 5: Solve for x
x = 970,775,688,632.53/1,131,192.63 - Step 6: Final answer
x = 858,187.78
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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.