Finding the Fourth Proportional to 640,616.49, 961,124.64 and 191,355.09
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Solution
The fourth proportional to 640,616.49, 961,124.64 and 191,355.09 is: 287,092.35
Step by Step Solution
- Step 1: Write the proportion equation
640,616.49 : 961,124.64 = 191,355.09 : x - Step 2: Convert to fraction form
640,616.49/961,124.64 = 191,355.09/x - Step 3: Cross multiply
640,616.49x = 961,124.64 × 191,355.09 - Step 4: Simplify right side
640,616.49x = 183,916,091,988.42 - Step 5: Solve for x
x = 183,916,091,988.42/640,616.49 - Step 6: Final answer
x = 287,092.35
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.