Finding the Fourth Proportional to 18,389,231.64, 25,376,201.72 and 10,129,116.08
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Solution
The fourth proportional to 18,389,231.64, 25,376,201.72 and 10,129,116.08 is: 13,977,663.55
Step by Step Solution
- Step 1: Write the proportion equation
18,389,231.64 : 25,376,201.72 = 10,129,116.08 : x - Step 2: Convert to fraction form
18,389,231.64/25,376,201.72 = 10,129,116.08/x - Step 3: Cross multiply
18,389,231.64x = 25,376,201.72 × 10,129,116.08 - Step 4: Simplify right side
18,389,231.64x = 257,038,492,891,375.66 - Step 5: Solve for x
x = 257,038,492,891,375.66/18,389,231.64 - Step 6: Final answer
x = 13,977,663.55
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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.