Finding the Fourth Proportional to 1,389,885.05, 1,918,270.91 and 953,944.26
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Solution
The fourth proportional to 1,389,885.05, 1,918,270.91 and 953,944.26 is: 1,316,600.63
Step by Step Solution
- Step 1: Write the proportion equation
1,389,885.05 : 1,918,270.91 = 953,944.26 : x - Step 2: Convert to fraction form
1,389,885.05/1,918,270.91 = 953,944.26/x - Step 3: Cross multiply
1,389,885.05x = 1,918,270.91 × 953,944.26 - Step 4: Simplify right side
1,389,885.05x = 1,829,923,518,949.76 - Step 5: Solve for x
x = 1,829,923,518,949.76/1,389,885.05 - Step 6: Final answer
x = 1,316,600.63
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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.