Finding the Fourth Proportional to 1,431,553.51, 1,975,581.64 and 778,223.49
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Solution
The fourth proportional to 1,431,553.51, 1,975,581.64 and 778,223.49 is: 1,073,968.96
Step by Step Solution
- Step 1: Write the proportion equation
1,431,553.51 : 1,975,581.64 = 778,223.49 : x - Step 2: Convert to fraction form
1,431,553.51/1,975,581.64 = 778,223.49/x - Step 3: Cross multiply
1,431,553.51x = 1,975,581.64 × 778,223.49 - Step 4: Simplify right side
1,431,553.51x = 1,537,444,038,660.72 - Step 5: Solve for x
x = 1,537,444,038,660.72/1,431,553.51 - Step 6: Final answer
x = 1,073,968.96
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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.