Finding the Fourth Proportional to 1,913,935.19, 2,641,278.13 and 1,178,611.12
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Solution
The fourth proportional to 1,913,935.19, 2,641,278.13 and 1,178,611.12 is: 1,626,512.63
Step by Step Solution
- Step 1: Write the proportion equation
1,913,935.19 : 2,641,278.13 = 1,178,611.12 : x - Step 2: Convert to fraction form
1,913,935.19/2,641,278.13 = 1,178,611.12/x - Step 3: Cross multiply
1,913,935.19x = 2,641,278.13 × 1,178,611.12 - Step 4: Simplify right side
1,913,935.19x = 3,113,039,765,481.08 - Step 5: Solve for x
x = 3,113,039,765,481.08/1,913,935.19 - Step 6: Final answer
x = 1,626,512.63
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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.