Finding the Fourth Proportional to 1,186,388.44, 1,637,207.94 and 642,511.72
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Solution
The fourth proportional to 1,186,388.44, 1,637,207.94 and 642,511.72 is: 886,661.78
Step by Step Solution
- Step 1: Write the proportion equation
1,186,388.44 : 1,637,207.94 = 642,511.72 : x - Step 2: Convert to fraction form
1,186,388.44/1,637,207.94 = 642,511.72/x - Step 3: Cross multiply
1,186,388.44x = 1,637,207.94 × 642,511.72 - Step 4: Simplify right side
1,186,388.44x = 1,051,925,289,527.06 - Step 5: Solve for x
x = 1,051,925,289,527.06/1,186,388.44 - Step 6: Final answer
x = 886,661.78
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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.