Finding the Fourth Proportional to 1,761,965.40, 2,643,639.30 and 640,147.80
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Solution
The fourth proportional to 1,761,965.40, 2,643,639.30 and 640,147.80 is: 960,472.82
Step by Step Solution
- Step 1: Write the proportion equation
1,761,965.40 : 2,643,639.30 = 640,147.80 : x - Step 2: Convert to fraction form
1,761,965.40/2,643,639.30 = 640,147.80/x - Step 3: Cross multiply
1,761,965.40x = 2,643,639.30 × 640,147.80 - Step 4: Simplify right side
1,761,965.40x = 1,692,319,881,888.54 - Step 5: Solve for x
x = 1,692,319,881,888.54/1,761,965.40 - Step 6: Final answer
x = 960,472.82
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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.