Finding the Fourth Proportional to 1,257,759,725.36, 1,735,685,171.88 and 685,547,708.72
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Solution
The fourth proportional to 1,257,759,725.36, 1,735,685,171.88 and 685,547,708.72 is: 946,043,166.00
Step by Step Solution
- Step 1: Write the proportion equation
1,257,759,725.36 : 1,735,685,171.88 = 685,547,708.72 : x - Step 2: Convert to fraction form
1,257,759,725.36/1,735,685,171.88 = 685,547,708.72/x - Step 3: Cross multiply
1,257,759,725.36x = 1,735,685,171.88 × 685,547,708.72 - Step 4: Simplify right side
1,257,759,725.36x = 1,189,894,992,641,613,568 - Step 5: Solve for x
x = 1,189,894,992,641,613,568/1,257,759,725.36 - Step 6: Final answer
x = 946,043,166.00
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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.