Finding the Fourth Proportional to 1,128,917.65, 1,557,907.17 and 612,671.41
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Solution
The fourth proportional to 1,128,917.65, 1,557,907.17 and 612,671.41 is: 845,486.99
Step by Step Solution
- Step 1: Write the proportion equation
1,128,917.65 : 1,557,907.17 = 612,671.41 : x - Step 2: Convert to fraction form
1,128,917.65/1,557,907.17 = 612,671.41/x - Step 3: Cross multiply
1,128,917.65x = 1,557,907.17 × 612,671.41 - Step 4: Simplify right side
1,128,917.65x = 954,485,185,589.15 - Step 5: Solve for x
x = 954,485,185,589.15/1,128,917.65 - Step 6: Final answer
x = 845,486.99
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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.