Finding the Fourth Proportional to 1,186,907.99, 1,637,933.40 and 643,047.53
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Solution
The fourth proportional to 1,186,907.99, 1,637,933.40 and 643,047.53 is: 887,405.79
Step by Step Solution
- Step 1: Write the proportion equation
1,186,907.99 : 1,637,933.40 = 643,047.53 : x - Step 2: Convert to fraction form
1,186,907.99/1,637,933.40 = 643,047.53/x - Step 3: Cross multiply
1,186,907.99x = 1,637,933.40 × 643,047.53 - Step 4: Simplify right side
1,186,907.99x = 1,053,269,018,984.84 - Step 5: Solve for x
x = 1,053,269,018,984.84/1,186,907.99 - Step 6: Final answer
x = 887,405.79
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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.