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Finding the Fourth Proportional to 98,601.29, 136,069.79 and 53,889.29

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Solution

The fourth proportional to 98,601.29, 136,069.79 and 53,889.29 is: 74,367.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,601.29 : 136,069.79 = 53,889.29 : x
  2. Step 2: Convert to fraction form
    98,601.29/136,069.79 = 53,889.29/x
  3. Step 3: Cross multiply
    98,601.29x = 136,069.79 × 53,889.29
  4. Step 4: Simplify right side
    98,601.29x = 7,332,704,104.10
  5. Step 5: Solve for x
    x = 7,332,704,104.10/98,601.29
  6. Step 6: Final answer
    x = 74,367.22

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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.