Finding the Fourth Proportional to 1,272,686.88, 1,756,313.64 and 691,915.68
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Solution
The fourth proportional to 1,272,686.88, 1,756,313.64 and 691,915.68 is: 954,846.76
Step by Step Solution
- Step 1: Write the proportion equation
1,272,686.88 : 1,756,313.64 = 691,915.68 : x - Step 2: Convert to fraction form
1,272,686.88/1,756,313.64 = 691,915.68/x - Step 3: Cross multiply
1,272,686.88x = 1,756,313.64 × 691,915.68 - Step 4: Simplify right side
1,272,686.88x = 1,215,220,946,513.88 - Step 5: Solve for x
x = 1,215,220,946,513.88/1,272,686.88 - Step 6: Final answer
x = 954,846.76
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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.