Finding the Fourth Proportional to 1,919,930.20, 2,879,117.70 and 657,107.80
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Solution
The fourth proportional to 1,919,930.20, 2,879,117.70 and 657,107.80 is: 985,395.56
Step by Step Solution
- Step 1: Write the proportion equation
1,919,930.20 : 2,879,117.70 = 657,107.80 : x - Step 2: Convert to fraction form
1,919,930.20/2,879,117.70 = 657,107.80/x - Step 3: Cross multiply
1,919,930.20x = 2,879,117.70 × 657,107.80 - Step 4: Simplify right side
1,919,930.20x = 1,891,890,697,788.06 - Step 5: Solve for x
x = 1,891,890,697,788.06/1,919,930.20 - Step 6: Final answer
x = 985,395.56
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.