Finding the Fourth Proportional to 1,386,691,187,965.90, 1,913,649,353,077.70 and 769,405,082,964.96
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Solution
The fourth proportional to 1,386,691,187,965.90, 1,913,649,353,077.70 and 769,405,082,964.96 is: 1,061,787,622,253.79
Step by Step Solution
- Step 1: Write the proportion equation
1,386,691,187,965.90 : 1,913,649,353,077.70 = 769,405,082,964.96 : x - Step 2: Convert to fraction form
1,386,691,187,965.90/1,913,649,353,077.70 = 769,405,082,964.96/x - Step 3: Cross multiply
1,386,691,187,965.90x = 1,913,649,353,077.70 × 769,405,082,964.96 - Step 4: Simplify right side
1,386,691,187,965.90x = 1,472,371,539,270,589,720,035,328 - Step 5: Solve for x
x = 1,472,371,539,270,589,720,035,328/1,386,691,187,965.90 - Step 6: Final answer
x = 1,061,787,622,253.79
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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.