Finding the Fourth Proportional to 1,172,921.76, 1,618,460 and 656,648.88
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Solution
The fourth proportional to 1,172,921.76, 1,618,460 and 656,648.88 is: 906,079.15
Step by Step Solution
- Step 1: Write the proportion equation
1,172,921.76 : 1,618,460 = 656,648.88 : x - Step 2: Convert to fraction form
1,172,921.76/1,618,460 = 656,648.88/x - Step 3: Cross multiply
1,172,921.76x = 1,618,460 × 656,648.88 - Step 4: Simplify right side
1,172,921.76x = 1,062,759,946,324.80 - Step 5: Solve for x
x = 1,062,759,946,324.80/1,172,921.76 - Step 6: Final answer
x = 906,079.15
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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.