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Finding the Fourth Proportional to 98,213.44, 135,545.52 and 55,779.52

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Solution

The fourth proportional to 98,213.44, 135,545.52 and 55,779.52 is: 76,981.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,213.44 : 135,545.52 = 55,779.52 : x
  2. Step 2: Convert to fraction form
    98,213.44/135,545.52 = 55,779.52/x
  3. Step 3: Cross multiply
    98,213.44x = 135,545.52 × 55,779.52
  4. Step 4: Simplify right side
    98,213.44x = 7,560,664,043.75
  5. Step 5: Solve for x
    x = 7,560,664,043.75/98,213.44
  6. Step 6: Final answer
    x = 76,981.97

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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.