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Finding the Fourth Proportional to 98,940.92, 136,536.78 and 54,227.96

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Solution

The fourth proportional to 98,940.92, 136,536.78 and 54,227.96 is: 74,833.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,940.92 : 136,536.78 = 54,227.96 : x
  2. Step 2: Convert to fraction form
    98,940.92/136,536.78 = 54,227.96/x
  3. Step 3: Cross multiply
    98,940.92x = 136,536.78 × 54,227.96
  4. Step 4: Simplify right side
    98,940.92x = 7,404,111,044.37
  5. Step 5: Solve for x
    x = 7,404,111,044.37/98,940.92
  6. Step 6: Final answer
    x = 74,833.66

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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.