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Finding the Fourth Proportional to 555,115.20, 832,162.50 and 200,042.40

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Solution

The fourth proportional to 555,115.20, 832,162.50 and 200,042.40 is: 299,879.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,115.20 : 832,162.50 = 200,042.40 : x
  2. Step 2: Convert to fraction form
    555,115.20/832,162.50 = 200,042.40/x
  3. Step 3: Cross multiply
    555,115.20x = 832,162.50 × 200,042.40
  4. Step 4: Simplify right side
    555,115.20x = 166,467,783,690
  5. Step 5: Solve for x
    x = 166,467,783,690/555,115.20
  6. Step 6: Final answer
    x = 299,879.71

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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.