Finding the Fourth Proportional to 1,761,656.40, 2,643,521.40 and 639,579.60
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Solution
The fourth proportional to 1,761,656.40, 2,643,521.40 and 639,579.60 is: 959,745.82
Step by Step Solution
- Step 1: Write the proportion equation
1,761,656.40 : 2,643,521.40 = 639,579.60 : x - Step 2: Convert to fraction form
1,761,656.40/2,643,521.40 = 639,579.60/x - Step 3: Cross multiply
1,761,656.40x = 2,643,521.40 × 639,579.60 - Step 4: Simplify right side
1,761,656.40x = 1,690,742,359,603.44 - Step 5: Solve for x
x = 1,690,742,359,603.44/1,761,656.40 - Step 6: Final answer
x = 959,745.82
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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.