Finding the Fourth Proportional to 1,128,655.26, 1,557,563.31 and 619,405.02
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Solution
The fourth proportional to 1,128,655.26, 1,557,563.31 and 619,405.02 is: 854,789.38
Step by Step Solution
- Step 1: Write the proportion equation
1,128,655.26 : 1,557,563.31 = 619,405.02 : x - Step 2: Convert to fraction form
1,128,655.26/1,557,563.31 = 619,405.02/x - Step 3: Cross multiply
1,128,655.26x = 1,557,563.31 × 619,405.02 - Step 4: Simplify right side
1,128,655.26x = 964,762,533,181.82 - Step 5: Solve for x
x = 964,762,533,181.82/1,128,655.26 - Step 6: Final answer
x = 854,789.38
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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.