Finding the Fourth Proportional to 1,264,190,712,185.70, 1,744,584,910,419.40 and 686,127,239,856.88
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Solution
The fourth proportional to 1,264,190,712,185.70, 1,744,584,910,419.40 and 686,127,239,856.88 is: 946,856,528,642.33
Step by Step Solution
- Step 1: Write the proportion equation
1,264,190,712,185.70 : 1,744,584,910,419.40 = 686,127,239,856.88 : x - Step 2: Convert to fraction form
1,264,190,712,185.70/1,744,584,910,419.40 = 686,127,239,856.88/x - Step 3: Cross multiply
1,264,190,712,185.70x = 1,744,584,910,419.40 × 686,127,239,856.88 - Step 4: Simplify right side
1,264,190,712,185.70x = 1,197,007,229,282,025,077,735,424 - Step 5: Solve for x
x = 1,197,007,229,282,025,077,735,424/1,264,190,712,185.70 - Step 6: Final answer
x = 946,856,528,642.33
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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.