Finding the Fourth Proportional to 1,393,836.16, 1,921,457.91 and 985,217.08
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Solution
The fourth proportional to 1,393,836.16, 1,921,457.91 and 985,217.08 is: 1,358,160.45
Step by Step Solution
- Step 1: Write the proportion equation
1,393,836.16 : 1,921,457.91 = 985,217.08 : x - Step 2: Convert to fraction form
1,393,836.16/1,921,457.91 = 985,217.08/x - Step 3: Cross multiply
1,393,836.16x = 1,921,457.91 × 985,217.08 - Step 4: Simplify right side
1,393,836.16x = 1,893,053,151,433.10 - Step 5: Solve for x
x = 1,893,053,151,433.10/1,393,836.16 - Step 6: Final answer
x = 1,358,160.45
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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.