Finding the Fourth Proportional to 1,116,936,532.85, 1,541,322,673.99 and 640,285,191.79
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Solution
The fourth proportional to 1,116,936,532.85, 1,541,322,673.99 and 640,285,191.79 is: 883,565,050.39
Step by Step Solution
- Step 1: Write the proportion equation
1,116,936,532.85 : 1,541,322,673.99 = 640,285,191.79 : x - Step 2: Convert to fraction form
1,116,936,532.85/1,541,322,673.99 = 640,285,191.79/x - Step 3: Cross multiply
1,116,936,532.85x = 1,541,322,673.99 × 640,285,191.79 - Step 4: Simplify right side
1,116,936,532.85x = 986,886,083,920,508,800 - Step 5: Solve for x
x = 986,886,083,920,508,800/1,116,936,532.85 - Step 6: Final answer
x = 883,565,050.39
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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.