Finding the Fourth Proportional to 1,191,679.74, 1,644,528.74 and 647,816.58
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Solution
The fourth proportional to 1,191,679.74, 1,644,528.74 and 647,816.58 is: 893,992.70
Step by Step Solution
- Step 1: Write the proportion equation
1,191,679.74 : 1,644,528.74 = 647,816.58 : x - Step 2: Convert to fraction form
1,191,679.74/1,644,528.74 = 647,816.58/x - Step 3: Cross multiply
1,191,679.74x = 1,644,528.74 × 647,816.58 - Step 4: Simplify right side
1,191,679.74x = 1,065,352,984,058.51 - Step 5: Solve for x
x = 1,065,352,984,058.51/1,191,679.74 - Step 6: Final answer
x = 893,992.70
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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.