Finding the Fourth Proportional to 1,917,509.36, 2,647,120.91 and 1,192,590.74
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Solution
The fourth proportional to 1,917,509.36, 2,647,120.91 and 1,192,590.74 is: 1,646,371.05
Step by Step Solution
- Step 1: Write the proportion equation
1,917,509.36 : 2,647,120.91 = 1,192,590.74 : x - Step 2: Convert to fraction form
1,917,509.36/2,647,120.91 = 1,192,590.74/x - Step 3: Cross multiply
1,917,509.36x = 2,647,120.91 × 1,192,590.74 - Step 4: Simplify right side
1,917,509.36x = 3,156,931,885,581.22 - Step 5: Solve for x
x = 3,156,931,885,581.22/1,917,509.36 - Step 6: Final answer
x = 1,646,371.05
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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.