Finding the Fourth Proportional to 3,996,593,553.88, 5,515,364,427.42 and 2,188,075,268.44
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Solution
The fourth proportional to 3,996,593,553.88, 5,515,364,427.42 and 2,188,075,268.44 is: 3,019,579,633.85
Step by Step Solution
- Step 1: Write the proportion equation
3,996,593,553.88 : 5,515,364,427.42 = 2,188,075,268.44 : x - Step 2: Convert to fraction form
3,996,593,553.88/5,515,364,427.42 = 2,188,075,268.44/x - Step 3: Cross multiply
3,996,593,553.88x = 5,515,364,427.42 × 2,188,075,268.44 - Step 4: Simplify right side
3,996,593,553.88x = 12,068,032,500,071,444,480 - Step 5: Solve for x
x = 12,068,032,500,071,444,480/3,996,593,553.88 - Step 6: Final answer
x = 3,019,579,633.85
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1.5x scale
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.