Finding the Fourth Proportional to 139,893.57, 193,052.79 and 76,231.26
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Solution
The fourth proportional to 139,893.57, 193,052.79 and 76,231.26 is: 105,198.96
Step by Step Solution
- Step 1: Write the proportion equation
139,893.57 : 193,052.79 = 76,231.26 : x - Step 2: Convert to fraction form
139,893.57/193,052.79 = 76,231.26/x - Step 3: Cross multiply
139,893.57x = 193,052.79 × 76,231.26 - Step 4: Simplify right side
139,893.57x = 14,716,657,428.22 - Step 5: Solve for x
x = 14,716,657,428.22/139,893.57 - Step 6: Final answer
x = 105,198.96
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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.