Finding the Fourth Proportional to 191,521.09, 287,386.12 and 79,211.05
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Solution
The fourth proportional to 191,521.09, 287,386.12 and 79,211.05 is: 118,859.78
Step by Step Solution
- Step 1: Write the proportion equation
191,521.09 : 287,386.12 = 79,211.05 : x - Step 2: Convert to fraction form
191,521.09/287,386.12 = 79,211.05/x - Step 3: Cross multiply
191,521.09x = 287,386.12 × 79,211.05 - Step 4: Simplify right side
191,521.09x = 22,764,155,701.17 - Step 5: Solve for x
x = 22,764,155,701.17/191,521.09 - Step 6: Final answer
x = 118,859.78
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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.