Finding the Fourth Proportional to 93,312,138.10, 139,968,207.15 and 85,921,827.70
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Solution
The fourth proportional to 93,312,138.10, 139,968,207.15 and 85,921,827.70 is: 128,882,741.55
Step by Step Solution
- Step 1: Write the proportion equation
93,312,138.10 : 139,968,207.15 = 85,921,827.70 : x - Step 2: Convert to fraction form
93,312,138.10/139,968,207.15 = 85,921,827.70/x - Step 3: Cross multiply
93,312,138.10x = 139,968,207.15 × 85,921,827.70 - Step 4: Simplify right side
93,312,138.10x = 12,026,324,178,220,208 - Step 5: Solve for x
x = 12,026,324,178,220,208/93,312,138.10 - Step 6: Final answer
x = 128,882,741.55
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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.