Finding the Fourth Proportional to 1,405,366.41, 1,938,928.80 and 915,112.09
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Solution
The fourth proportional to 1,405,366.41, 1,938,928.80 and 915,112.09 is: 1,262,544.18
Step by Step Solution
- Step 1: Write the proportion equation
1,405,366.41 : 1,938,928.80 = 915,112.09 : x - Step 2: Convert to fraction form
1,405,366.41/1,938,928.80 = 915,112.09/x - Step 3: Cross multiply
1,405,366.41x = 1,938,928.80 × 915,112.09 - Step 4: Simplify right side
1,405,366.41x = 1,774,337,186,529.19 - Step 5: Solve for x
x = 1,774,337,186,529.19/1,405,366.41 - Step 6: Final answer
x = 1,262,544.18
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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.