Finding the Fourth Proportional to 28,187,443.87, 38,900,197.11 and 15,801,515.92
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Solution
The fourth proportional to 28,187,443.87, 38,900,197.11 and 15,801,515.92 is: 21,806,946.63
Step by Step Solution
- Step 1: Write the proportion equation
28,187,443.87 : 38,900,197.11 = 15,801,515.92 : x - Step 2: Convert to fraction form
28,187,443.87/38,900,197.11 = 15,801,515.92/x - Step 3: Cross multiply
28,187,443.87x = 38,900,197.11 × 15,801,515.92 - Step 4: Simplify right side
28,187,443.87x = 614,682,084,022,001.25 - Step 5: Solve for x
x = 614,682,084,022,001.25/28,187,443.87 - Step 6: Final answer
x = 21,806,946.63
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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.