Finding the Fourth Proportional to 1,391,664.94, 1,920,497.90 and 847,800.56
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Solution
The fourth proportional to 1,391,664.94, 1,920,497.90 and 847,800.56 is: 1,169,964.95
Step by Step Solution
- Step 1: Write the proportion equation
1,391,664.94 : 1,920,497.90 = 847,800.56 : x - Step 2: Convert to fraction form
1,391,664.94/1,920,497.90 = 847,800.56/x - Step 3: Cross multiply
1,391,664.94x = 1,920,497.90 × 847,800.56 - Step 4: Simplify right side
1,391,664.94x = 1,628,199,195,661.07 - Step 5: Solve for x
x = 1,628,199,195,661.07/1,391,664.94 - Step 6: Final answer
x = 1,169,964.95
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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.