Finding the Fourth Proportional to 86,582.05, 129,873.08 and 66,899.05
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Solution
The fourth proportional to 86,582.05, 129,873.08 and 66,899.05 is: 100,348.58
Step by Step Solution
- Step 1: Write the proportion equation
86,582.05 : 129,873.08 = 66,899.05 : x - Step 2: Convert to fraction form
86,582.05/129,873.08 = 66,899.05/x - Step 3: Cross multiply
86,582.05x = 129,873.08 × 66,899.05 - Step 4: Simplify right side
86,582.05x = 8,688,385,338.08 - Step 5: Solve for x
x = 8,688,385,338.08/86,582.05 - Step 6: Final answer
x = 100,348.58
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.