Finding the Fourth Proportional to 19,186,595.10, 28,794,816.86 and 13,391,682.53
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Solution
The fourth proportional to 19,186,595.10, 28,794,816.86 and 13,391,682.53 is: 20,097,940.45
Step by Step Solution
- Step 1: Write the proportion equation
19,186,595.10 : 28,794,816.86 = 13,391,682.53 : x - Step 2: Convert to fraction form
19,186,595.10/28,794,816.86 = 13,391,682.53/x - Step 3: Cross multiply
19,186,595.10x = 28,794,816.86 × 13,391,682.53 - Step 4: Simplify right side
19,186,595.10x = 385,611,045,687,679 - Step 5: Solve for x
x = 385,611,045,687,679/19,186,595.10 - Step 6: Final answer
x = 20,097,940.45
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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.