Finding the Fourth Proportional to 691,081.40, 953,697.07 and 385,177.49
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Solution
The fourth proportional to 691,081.40, 953,697.07 and 385,177.49 is: 531,547.58
Step by Step Solution
- Step 1: Write the proportion equation
691,081.40 : 953,697.07 = 385,177.49 : x - Step 2: Convert to fraction form
691,081.40/953,697.07 = 385,177.49/x - Step 3: Cross multiply
691,081.40x = 953,697.07 × 385,177.49 - Step 4: Simplify right side
691,081.40x = 367,342,645,064.25 - Step 5: Solve for x
x = 367,342,645,064.25/691,081.40 - Step 6: Final answer
x = 531,547.58
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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.