Finding the Fourth Proportional to 128,858,324.16, 177,824,516.34 and 70,911,572.16
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Solution
The fourth proportional to 128,858,324.16, 177,824,516.34 and 70,911,572.16 is: 97,857,985.54
Step by Step Solution
- Step 1: Write the proportion equation
128,858,324.16 : 177,824,516.34 = 70,911,572.16 : x - Step 2: Convert to fraction form
128,858,324.16/177,824,516.34 = 70,911,572.16/x - Step 3: Cross multiply
128,858,324.16x = 177,824,516.34 × 70,911,572.16 - Step 4: Simplify right side
128,858,324.16x = 12,609,816,022,261,008 - Step 5: Solve for x
x = 12,609,816,022,261,008/128,858,324.16 - Step 6: Final answer
x = 97,857,985.54
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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.