Finding the Fourth Proportional to 657,934,138.70, 986,901,208.05 and 528,793,975.70
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Solution
The fourth proportional to 657,934,138.70, 986,901,208.05 and 528,793,975.70 is: 793,190,963.55
Step by Step Solution
- Step 1: Write the proportion equation
657,934,138.70 : 986,901,208.05 = 528,793,975.70 : x - Step 2: Convert to fraction form
657,934,138.70/986,901,208.05 = 528,793,975.70/x - Step 3: Cross multiply
657,934,138.70x = 986,901,208.05 × 528,793,975.70 - Step 4: Simplify right side
657,934,138.70x = 521,867,413,427,892,288 - Step 5: Solve for x
x = 521,867,413,427,892,288/657,934,138.70 - Step 6: Final answer
x = 793,190,963.55
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Double scale
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Similar ratio
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1.5x scale
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.