Finding the Fourth Proportional to 1,189,233.18, 1,641,146.09 and 645,368.81
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Solution
The fourth proportional to 1,189,233.18, 1,641,146.09 and 645,368.81 is: 890,611.28
Step by Step Solution
- Step 1: Write the proportion equation
1,189,233.18 : 1,641,146.09 = 645,368.81 : x - Step 2: Convert to fraction form
1,189,233.18/1,641,146.09 = 645,368.81/x - Step 3: Cross multiply
1,189,233.18x = 1,641,146.09 × 645,368.81 - Step 4: Simplify right side
1,189,233.18x = 1,059,144,487,706.88 - Step 5: Solve for x
x = 1,059,144,487,706.88/1,189,233.18 - Step 6: Final answer
x = 890,611.28
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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.