Finding the Fourth Proportional to 1,258,774.05, 1,737,128.13 and 685,814.07
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Solution
The fourth proportional to 1,258,774.05, 1,737,128.13 and 685,814.07 is: 946,434.28
Step by Step Solution
- Step 1: Write the proportion equation
1,258,774.05 : 1,737,128.13 = 685,814.07 : x - Step 2: Convert to fraction form
1,258,774.05/1,737,128.13 = 685,814.07/x - Step 3: Cross multiply
1,258,774.05x = 1,737,128.13 × 685,814.07 - Step 4: Simplify right side
1,258,774.05x = 1,191,346,912,946.79 - Step 5: Solve for x
x = 1,191,346,912,946.79/1,258,774.05 - Step 6: Final answer
x = 946,434.28
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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.