Finding the Fourth Proportional to 1,189,497.14, 1,641,507.70 and 645,633.03
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Solution
The fourth proportional to 1,189,497.14, 1,641,507.70 and 645,633.03 is: 890,974.47
Step by Step Solution
- Step 1: Write the proportion equation
1,189,497.14 : 1,641,507.70 = 645,633.03 : x - Step 2: Convert to fraction form
1,189,497.14/1,641,507.70 = 645,633.03/x - Step 3: Cross multiply
1,189,497.14x = 1,641,507.70 × 645,633.03 - Step 4: Simplify right side
1,189,497.14x = 1,059,811,588,505.25 - Step 5: Solve for x
x = 1,059,811,588,505.25/1,189,497.14 - Step 6: Final answer
x = 890,974.47
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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.