Finding the Fourth Proportional to 1,187,838.71, 1,640,570.64 and 805,201.19
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Solution
The fourth proportional to 1,187,838.71, 1,640,570.64 and 805,201.19 is: 1,112,094.95
Step by Step Solution
- Step 1: Write the proportion equation
1,187,838.71 : 1,640,570.64 = 805,201.19 : x - Step 2: Convert to fraction form
1,187,838.71/1,640,570.64 = 805,201.19/x - Step 3: Cross multiply
1,187,838.71x = 1,640,570.64 × 805,201.19 - Step 4: Simplify right side
1,187,838.71x = 1,320,989,431,607.06 - Step 5: Solve for x
x = 1,320,989,431,607.06/1,187,838.71 - Step 6: Final answer
x = 1,112,094.95
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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.