Finding the Fourth Proportional to 1,919,836,909.95, 2,879,755,371.75 and 539,651,417.88
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Solution
The fourth proportional to 1,919,836,909.95, 2,879,755,371.75 and 539,651,417.88 is: 809,477,128.75
Step by Step Solution
- Step 1: Write the proportion equation
1,919,836,909.95 : 2,879,755,371.75 = 539,651,417.88 : x - Step 2: Convert to fraction form
1,919,836,909.95/2,879,755,371.75 = 539,651,417.88/x - Step 3: Cross multiply
1,919,836,909.95x = 2,879,755,371.75 × 539,651,417.88 - Step 4: Simplify right side
1,919,836,909.95x = 1,554,064,069,525,197,312 - Step 5: Solve for x
x = 1,554,064,069,525,197,312/1,919,836,909.95 - Step 6: Final answer
x = 809,477,128.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.