Finding the Fourth Proportional to 1,291,117.15, 1,936,784.15 and 392,566.70
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Solution
The fourth proportional to 1,291,117.15, 1,936,784.15 and 392,566.70 is: 588,883.02
Step by Step Solution
- Step 1: Write the proportion equation
1,291,117.15 : 1,936,784.15 = 392,566.70 : x - Step 2: Convert to fraction form
1,291,117.15/1,936,784.15 = 392,566.70/x - Step 3: Cross multiply
1,291,117.15x = 1,936,784.15 × 392,566.70 - Step 4: Simplify right side
1,291,117.15x = 760,316,966,729.06 - Step 5: Solve for x
x = 760,316,966,729.06/1,291,117.15 - Step 6: Final answer
x = 588,883.02
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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.