Finding the Fourth Proportional to 186,821,783.99, 257,814,052.07 and 100,892,315.76
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Solution
The fourth proportional to 186,821,783.99, 257,814,052.07 and 100,892,315.76 is: 139,231,390.43
Step by Step Solution
- Step 1: Write the proportion equation
186,821,783.99 : 257,814,052.07 = 100,892,315.76 : x - Step 2: Convert to fraction form
186,821,783.99/257,814,052.07 = 100,892,315.76/x - Step 3: Cross multiply
186,821,783.99x = 257,814,052.07 × 100,892,315.76 - Step 4: Simplify right side
186,821,783.99x = 26,011,456,747,340,256 - Step 5: Solve for x
x = 26,011,456,747,340,256/186,821,783.99 - Step 6: Final answer
x = 139,231,390.43
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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.