Finding the Fourth Proportional to 1,391,056.64, 1,919,827.68 and 818,069.12
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Solution
The fourth proportional to 1,391,056.64, 1,919,827.68 and 818,069.12 is: 1,129,035.08
Step by Step Solution
- Step 1: Write the proportion equation
1,391,056.64 : 1,919,827.68 = 818,069.12 : x - Step 2: Convert to fraction form
1,391,056.64/1,919,827.68 = 818,069.12/x - Step 3: Cross multiply
1,391,056.64x = 1,919,827.68 × 818,069.12 - Step 4: Simplify right side
1,391,056.64x = 1,570,551,740,729.24 - Step 5: Solve for x
x = 1,570,551,740,729.24/1,391,056.64 - Step 6: Final answer
x = 1,129,035.08
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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.