Finding the Fourth Proportional to 256,519,799.71, 353,987,839.84 and 139,042,607.68
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Solution
The fourth proportional to 256,519,799.71, 353,987,839.84 and 139,042,607.68 is: 191,873,658.07
Step by Step Solution
- Step 1: Write the proportion equation
256,519,799.71 : 353,987,839.84 = 139,042,607.68 : x - Step 2: Convert to fraction form
256,519,799.71/353,987,839.84 = 139,042,607.68/x - Step 3: Cross multiply
256,519,799.71x = 353,987,839.84 × 139,042,607.68 - Step 4: Simplify right side
256,519,799.71x = 49,219,392,338,363,792 - Step 5: Solve for x
x = 49,219,392,338,363,792/256,519,799.71 - Step 6: Final answer
x = 191,873,658.07
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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.