Finding the Fourth Proportional to 1,190,405.69, 1,643,230.95 and 828,039.84
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Solution
The fourth proportional to 1,190,405.69, 1,643,230.95 and 828,039.84 is: 1,143,022.67
Step by Step Solution
- Step 1: Write the proportion equation
1,190,405.69 : 1,643,230.95 = 828,039.84 : x - Step 2: Convert to fraction form
1,190,405.69/1,643,230.95 = 828,039.84/x - Step 3: Cross multiply
1,190,405.69x = 1,643,230.95 × 828,039.84 - Step 4: Simplify right side
1,190,405.69x = 1,360,660,692,921.05 - Step 5: Solve for x
x = 1,360,660,692,921.05/1,190,405.69 - Step 6: Final answer
x = 1,143,022.67
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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.