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Finding the Fourth Proportional to 195,879.06, 270,019.17 and 153,363.78

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Solution

The fourth proportional to 195,879.06, 270,019.17 and 153,363.78 is: 211,411.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,879.06 : 270,019.17 = 153,363.78 : x
  2. Step 2: Convert to fraction form
    195,879.06/270,019.17 = 153,363.78/x
  3. Step 3: Cross multiply
    195,879.06x = 270,019.17 × 153,363.78
  4. Step 4: Simplify right side
    195,879.06x = 41,411,160,583.66
  5. Step 5: Solve for x
    x = 41,411,160,583.66/195,879.06
  6. Step 6: Final answer
    x = 211,411.88

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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.