Finding the Fourth Proportional to 206,111.99, 284,352.66 and 128,542.01
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Solution
The fourth proportional to 206,111.99, 284,352.66 and 128,542.01 is: 177,336.90
Step by Step Solution
- Step 1: Write the proportion equation
206,111.99 : 284,352.66 = 128,542.01 : x - Step 2: Convert to fraction form
206,111.99/284,352.66 = 128,542.01/x - Step 3: Cross multiply
206,111.99x = 284,352.66 × 128,542.01 - Step 4: Simplify right side
206,111.99x = 36,551,261,043.48 - Step 5: Solve for x
x = 36,551,261,043.48/206,111.99 - Step 6: Final answer
x = 177,336.90
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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.