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Finding the Fourth Proportional to 98,902.67, 136,485.09 and 53,581.52

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Solution

The fourth proportional to 98,902.67, 136,485.09 and 53,581.52 is: 73,942.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,902.67 : 136,485.09 = 53,581.52 : x
  2. Step 2: Convert to fraction form
    98,902.67/136,485.09 = 53,581.52/x
  3. Step 3: Cross multiply
    98,902.67x = 136,485.09 × 53,581.52
  4. Step 4: Simplify right side
    98,902.67x = 7,313,078,920.75
  5. Step 5: Solve for x
    x = 7,313,078,920.75/98,902.67
  6. Step 6: Final answer
    x = 73,942.18

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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.