Finding the Fourth Proportional to 66,688,757.19, 100,019,138.99 and 18,808,503.75
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Solution
The fourth proportional to 66,688,757.19, 100,019,138.99 and 18,808,503.75 is: 28,208,808.05
Step by Step Solution
- Step 1: Write the proportion equation
66,688,757.19 : 100,019,138.99 = 18,808,503.75 : x - Step 2: Convert to fraction form
66,688,757.19/100,019,138.99 = 18,808,503.75/x - Step 3: Cross multiply
66,688,757.19x = 100,019,138.99 × 18,808,503.75 - Step 4: Simplify right side
66,688,757.19x = 1,881,210,350,671,143.75 - Step 5: Solve for x
x = 1,881,210,350,671,143.75/66,688,757.19 - Step 6: Final answer
x = 28,208,808.05
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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.