Finding the Fourth Proportional to 1,291,813.94, 1,938,000.95 and 393,232.19
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Solution
The fourth proportional to 1,291,813.94, 1,938,000.95 and 393,232.19 is: 589,933.52
Step by Step Solution
- Step 1: Write the proportion equation
1,291,813.94 : 1,938,000.95 = 393,232.19 : x - Step 2: Convert to fraction form
1,291,813.94/1,938,000.95 = 393,232.19/x - Step 3: Cross multiply
1,291,813.94x = 1,938,000.95 × 393,232.19 - Step 4: Simplify right side
1,291,813.94x = 762,084,346,134.42 - Step 5: Solve for x
x = 762,084,346,134.42/1,291,813.94 - Step 6: Final answer
x = 589,933.52
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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.