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Finding the Fourth Proportional to 311,640.88, 467,124.36 and 124,446.64

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Solution

The fourth proportional to 311,640.88, 467,124.36 and 124,446.64 is: 186,535.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,640.88 : 467,124.36 = 124,446.64 : x
  2. Step 2: Convert to fraction form
    311,640.88/467,124.36 = 124,446.64/x
  3. Step 3: Cross multiply
    311,640.88x = 467,124.36 × 124,446.64
  4. Step 4: Simplify right side
    311,640.88x = 58,132,057,064.15
  5. Step 5: Solve for x
    x = 58,132,057,064.15/311,640.88
  6. Step 6: Final answer
    x = 186,535.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.