Finding the Fourth Proportional to 1,129,152.96, 1,558,029.94 and 639,120.11
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Solution
The fourth proportional to 1,129,152.96, 1,558,029.94 and 639,120.11 is: 881,871.89
Step by Step Solution
- Step 1: Write the proportion equation
1,129,152.96 : 1,558,029.94 = 639,120.11 : x - Step 2: Convert to fraction form
1,129,152.96/1,558,029.94 = 639,120.11/x - Step 3: Cross multiply
1,129,152.96x = 1,558,029.94 × 639,120.11 - Step 4: Simplify right side
1,129,152.96x = 995,768,257,248.14 - Step 5: Solve for x
x = 995,768,257,248.14/1,129,152.96 - Step 6: Final answer
x = 881,871.89
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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.