Finding the Fourth Proportional to 1,123,186.14, 1,549,817.64 and 639,760.68
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Solution
The fourth proportional to 1,123,186.14, 1,549,817.64 and 639,760.68 is: 882,767.65
Step by Step Solution
- Step 1: Write the proportion equation
1,123,186.14 : 1,549,817.64 = 639,760.68 : x - Step 2: Convert to fraction form
1,123,186.14/1,549,817.64 = 639,760.68/x - Step 3: Cross multiply
1,123,186.14x = 1,549,817.64 × 639,760.68 - Step 4: Simplify right side
1,123,186.14x = 991,512,387,242.40 - Step 5: Solve for x
x = 991,512,387,242.40/1,123,186.14 - Step 6: Final answer
x = 882,767.65
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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.