Finding the Fourth Proportional to 1,221,544.12, 1,685,030.51 and 761,860.62
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Solution
The fourth proportional to 1,221,544.12, 1,685,030.51 and 761,860.62 is: 1,050,930.84
Step by Step Solution
- Step 1: Write the proportion equation
1,221,544.12 : 1,685,030.51 = 761,860.62 : x - Step 2: Convert to fraction form
1,221,544.12/1,685,030.51 = 761,860.62/x - Step 3: Cross multiply
1,221,544.12x = 1,685,030.51 × 761,860.62 - Step 4: Simplify right side
1,221,544.12x = 1,283,758,389,067.52 - Step 5: Solve for x
x = 1,283,758,389,067.52/1,221,544.12 - Step 6: Final answer
x = 1,050,930.84
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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.