Finding the Fourth Proportional to 1,292,082,203.66, 1,783,064,371.12 and 705,371,339.66
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Solution
The fourth proportional to 1,292,082,203.66, 1,783,064,371.12 and 705,371,339.66 is: 973,407,497.28
Step by Step Solution
- Step 1: Write the proportion equation
1,292,082,203.66 : 1,783,064,371.12 = 705,371,339.66 : x - Step 2: Convert to fraction form
1,292,082,203.66/1,783,064,371.12 = 705,371,339.66/x - Step 3: Cross multiply
1,292,082,203.66x = 1,783,064,371.12 × 705,371,339.66 - Step 4: Simplify right side
1,292,082,203.66x = 1,257,722,504,146,251,008 - Step 5: Solve for x
x = 1,257,722,504,146,251,008/1,292,082,203.66 - Step 6: Final answer
x = 973,407,497.28
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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.