Finding the Fourth Proportional to 1,920,323.19, 2,879,851.57 and 640,578
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Solution
The fourth proportional to 1,920,323.19, 2,879,851.57 and 640,578 is: 960,655.77
Step by Step Solution
- Step 1: Write the proportion equation
1,920,323.19 : 2,879,851.57 = 640,578 : x - Step 2: Convert to fraction form
1,920,323.19/2,879,851.57 = 640,578/x - Step 3: Cross multiply
1,920,323.19x = 2,879,851.57 × 640,578 - Step 4: Simplify right side
1,920,323.19x = 1,844,769,557,406.02 - Step 5: Solve for x
x = 1,844,769,557,406.02/1,920,323.19 - Step 6: Final answer
x = 960,655.77
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.