Finding the Fourth Proportional to 1,291,638.12, 1,936,491.93 and 891,136.05
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Solution
The fourth proportional to 1,291,638.12, 1,936,491.93 and 891,136.05 is: 1,336,038.12
Step by Step Solution
- Step 1: Write the proportion equation
1,291,638.12 : 1,936,491.93 = 891,136.05 : x - Step 2: Convert to fraction form
1,291,638.12/1,936,491.93 = 891,136.05/x - Step 3: Cross multiply
1,291,638.12x = 1,936,491.93 × 891,136.05 - Step 4: Simplify right side
1,291,638.12x = 1,725,677,769,357.08 - Step 5: Solve for x
x = 1,725,677,769,357.08/1,291,638.12 - Step 6: Final answer
x = 1,336,038.12
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.