Finding the Fourth Proportional to 1,191,209.18, 1,643,884.68 and 647,355.74
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Solution
The fourth proportional to 1,191,209.18, 1,643,884.68 and 647,355.74 is: 893,359.62
Step by Step Solution
- Step 1: Write the proportion equation
1,191,209.18 : 1,643,884.68 = 647,355.74 : x - Step 2: Convert to fraction form
1,191,209.18/1,643,884.68 = 647,355.74/x - Step 3: Cross multiply
1,191,209.18x = 1,643,884.68 × 647,355.74 - Step 4: Simplify right side
1,191,209.18x = 1,064,178,183,496.06 - Step 5: Solve for x
x = 1,064,178,183,496.06/1,191,209.18 - Step 6: Final answer
x = 893,359.62
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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.