Finding the Fourth Proportional to 28,161,039.56, 38,879,786.58 and 19,355,652.68
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Solution
The fourth proportional to 28,161,039.56, 38,879,786.58 and 19,355,652.68 is: 26,722,864.53
Step by Step Solution
- Step 1: Write the proportion equation
28,161,039.56 : 38,879,786.58 = 19,355,652.68 : x - Step 2: Convert to fraction form
28,161,039.56/38,879,786.58 = 19,355,652.68/x - Step 3: Cross multiply
28,161,039.56x = 38,879,786.58 × 19,355,652.68 - Step 4: Simplify right side
28,161,039.56x = 752,543,645,315,005 - Step 5: Solve for x
x = 752,543,645,315,005/28,161,039.56 - Step 6: Final answer
x = 26,722,864.53
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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.