Finding the Fourth Proportional to 1,889,638.20, 2,834,457.30 and 768,511.80
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Solution
The fourth proportional to 1,889,638.20, 2,834,457.30 and 768,511.80 is: 1,152,767.70
Step by Step Solution
- Step 1: Write the proportion equation
1,889,638.20 : 2,834,457.30 = 768,511.80 : x - Step 2: Convert to fraction form
1,889,638.20/2,834,457.30 = 768,511.80/x - Step 3: Cross multiply
1,889,638.20x = 2,834,457.30 × 768,511.80 - Step 4: Simplify right side
1,889,638.20x = 2,178,313,881,646.14 - Step 5: Solve for x
x = 2,178,313,881,646.14/1,889,638.20 - Step 6: Final answer
x = 1,152,767.70
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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.