Finding the Fourth Proportional to 1,987,914.11, 2,979,112.41 and 905,782.07
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Solution
The fourth proportional to 1,987,914.11, 2,979,112.41 and 905,782.07 is: 1,357,416.09
Step by Step Solution
- Step 1: Write the proportion equation
1,987,914.11 : 2,979,112.41 = 905,782.07 : x - Step 2: Convert to fraction form
1,987,914.11/2,979,112.41 = 905,782.07/x - Step 3: Cross multiply
1,987,914.11x = 2,979,112.41 × 905,782.07 - Step 4: Simplify right side
1,987,914.11x = 2,698,426,600,963.58 - Step 5: Solve for x
x = 2,698,426,600,963.58/1,987,914.11 - Step 6: Final answer
x = 1,357,416.09
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.