Finding the Fourth Proportional to 1,223,289.63, 1,688,139.68 and 686,745.63
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Solution
The fourth proportional to 1,223,289.63, 1,688,139.68 and 686,745.63 is: 947,708.96
Step by Step Solution
- Step 1: Write the proportion equation
1,223,289.63 : 1,688,139.68 = 686,745.63 : x - Step 2: Convert to fraction form
1,223,289.63/1,688,139.68 = 686,745.63/x - Step 3: Cross multiply
1,223,289.63x = 1,688,139.68 × 686,745.63 - Step 4: Simplify right side
1,223,289.63x = 1,159,322,548,069.60 - Step 5: Solve for x
x = 1,159,322,548,069.60/1,223,289.63 - Step 6: Final answer
x = 947,708.96
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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.