Finding the Fourth Proportional to 1,668,539,589.81, 2,302,586,914.10 and 905,583,671.40
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Solution
The fourth proportional to 1,668,539,589.81, 2,302,586,914.10 and 905,583,671.40 is: 1,249,706,704.07
Step by Step Solution
- Step 1: Write the proportion equation
1,668,539,589.81 : 2,302,586,914.10 = 905,583,671.40 : x - Step 2: Convert to fraction form
1,668,539,589.81/2,302,586,914.10 = 905,583,671.40/x - Step 3: Cross multiply
1,668,539,589.81x = 2,302,586,914.10 × 905,583,671.40 - Step 4: Simplify right side
1,668,539,589.81x = 2,085,185,111,388,274,176 - Step 5: Solve for x
x = 2,085,185,111,388,274,176/1,668,539,589.81 - Step 6: Final answer
x = 1,249,706,704.07
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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.