Finding the Fourth Proportional to 217,085,185,810.70, 325,615,994,636.95 and 65,979,705,984
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Solution
The fourth proportional to 217,085,185,810.70, 325,615,994,636.95 and 65,979,705,984 is: 98,965,977,386.26
Step by Step Solution
- Step 1: Write the proportion equation
217,085,185,810.70 : 325,615,994,636.95 = 65,979,705,984 : x - Step 2: Convert to fraction form
217,085,185,810.70/325,615,994,636.95 = 65,979,705,984/x - Step 3: Cross multiply
217,085,185,810.70x = 325,615,994,636.95 × 65,979,705,984 - Step 4: Simplify right side
217,085,185,810.70x = 21,484,047,589,833,682,452,480 - Step 5: Solve for x
x = 21,484,047,589,833,682,452,480/217,085,185,810.70 - Step 6: Final answer
x = 98,965,977,386.26
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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.