Finding the Fourth Proportional to 386,869.12, 533,903.08 and 217,103.26
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Solution
The fourth proportional to 386,869.12, 533,903.08 and 217,103.26 is: 299,615.80
Step by Step Solution
- Step 1: Write the proportion equation
386,869.12 : 533,903.08 = 217,103.26 : x - Step 2: Convert to fraction form
386,869.12/533,903.08 = 217,103.26/x - Step 3: Cross multiply
386,869.12x = 533,903.08 × 217,103.26 - Step 4: Simplify right side
386,869.12x = 115,912,099,192.04 - Step 5: Solve for x
x = 115,912,099,192.04/386,869.12 - Step 6: Final answer
x = 299,615.80
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1.5x scale
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.