Finding the Fourth Proportional to 1,186,230.77, 1,636,998.20 and 642,366.55
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Solution
The fourth proportional to 1,186,230.77, 1,636,998.20 and 642,366.55 is: 886,465.70
Step by Step Solution
- Step 1: Write the proportion equation
1,186,230.77 : 1,636,998.20 = 642,366.55 : x - Step 2: Convert to fraction form
1,186,230.77/1,636,998.20 = 642,366.55/x - Step 3: Cross multiply
1,186,230.77x = 1,636,998.20 × 642,366.55 - Step 4: Simplify right side
1,186,230.77x = 1,051,552,890,946.81 - Step 5: Solve for x
x = 1,051,552,890,946.81/1,186,230.77 - Step 6: Final answer
x = 886,465.70
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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.