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Finding the Fourth Proportional to 98,608.54, 136,079.72 and 53,286.50

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Solution

The fourth proportional to 98,608.54, 136,079.72 and 53,286.50 is: 73,535.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,608.54 : 136,079.72 = 53,286.50 : x
  2. Step 2: Convert to fraction form
    98,608.54/136,079.72 = 53,286.50/x
  3. Step 3: Cross multiply
    98,608.54x = 136,079.72 × 53,286.50
  4. Step 4: Simplify right side
    98,608.54x = 7,251,211,999.78
  5. Step 5: Solve for x
    x = 7,251,211,999.78/98,608.54
  6. Step 6: Final answer
    x = 73,535.33

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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.