Finding the Fourth Proportional to 1,393,728.18, 1,923,160.75 and 781,857.53
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Solution
The fourth proportional to 1,393,728.18, 1,923,160.75 and 781,857.53 is: 1,078,860.09
Step by Step Solution
- Step 1: Write the proportion equation
1,393,728.18 : 1,923,160.75 = 781,857.53 : x - Step 2: Convert to fraction form
1,393,728.18/1,923,160.75 = 781,857.53/x - Step 3: Cross multiply
1,393,728.18x = 1,923,160.75 × 781,857.53 - Step 4: Simplify right side
1,393,728.18x = 1,503,637,713,787.95 - Step 5: Solve for x
x = 1,503,637,713,787.95/1,393,728.18 - Step 6: Final answer
x = 1,078,860.09
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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.