Finding the Fourth Proportional to 19,043,788.58, 26,288,469.80 and 12,857,212.07
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Solution
The fourth proportional to 19,043,788.58, 26,288,469.80 and 12,857,212.07 is: 17,748,381.82
Step by Step Solution
- Step 1: Write the proportion equation
19,043,788.58 : 26,288,469.80 = 12,857,212.07 : x - Step 2: Convert to fraction form
19,043,788.58/26,288,469.80 = 12,857,212.07/x - Step 3: Cross multiply
19,043,788.58x = 26,288,469.80 × 12,857,212.07 - Step 4: Simplify right side
19,043,788.58x = 337,996,431,018,662.06 - Step 5: Solve for x
x = 337,996,431,018,662.06/19,043,788.58 - Step 6: Final answer
x = 17,748,381.82
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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.