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Finding the Fourth Proportional to 99,196.70, 136,891.41 and 53,874.62

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Solution

The fourth proportional to 99,196.70, 136,891.41 and 53,874.62 is: 74,346.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,196.70 : 136,891.41 = 53,874.62 : x
  2. Step 2: Convert to fraction form
    99,196.70/136,891.41 = 53,874.62/x
  3. Step 3: Cross multiply
    99,196.70x = 136,891.41 × 53,874.62
  4. Step 4: Simplify right side
    99,196.70x = 7,374,972,695.01
  5. Step 5: Solve for x
    x = 7,374,972,695.01/99,196.70
  6. Step 6: Final answer
    x = 74,346.96

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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.