Finding the Fourth Proportional to 1,243,782.63, 1,865,838.11 and 434,181.62
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Solution
The fourth proportional to 1,243,782.63, 1,865,838.11 and 434,181.62 is: 651,329.74
Step by Step Solution
- Step 1: Write the proportion equation
1,243,782.63 : 1,865,838.11 = 434,181.62 : x - Step 2: Convert to fraction form
1,243,782.63/1,865,838.11 = 434,181.62/x - Step 3: Cross multiply
1,243,782.63x = 1,865,838.11 × 434,181.62 - Step 4: Simplify right side
1,243,782.63x = 810,112,615,751.23 - Step 5: Solve for x
x = 810,112,615,751.23/1,243,782.63 - Step 6: Final answer
x = 651,329.74
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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.