Finding the Fourth Proportional to 186,537.49, 257,617.11 and 128,545.01
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Solution
The fourth proportional to 186,537.49, 257,617.11 and 128,545.01 is: 177,526.75
Step by Step Solution
- Step 1: Write the proportion equation
186,537.49 : 257,617.11 = 128,545.01 : x - Step 2: Convert to fraction form
186,537.49/257,617.11 = 128,545.01/x - Step 3: Cross multiply
186,537.49x = 257,617.11 × 128,545.01 - Step 4: Simplify right side
186,537.49x = 33,115,394,141.14 - Step 5: Solve for x
x = 33,115,394,141.14/186,537.49 - Step 6: Final answer
x = 177,526.75
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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.