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Finding the Fourth Proportional to 125,469.84, 188,253.72 and 55,299.72

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Solution

The fourth proportional to 125,469.84, 188,253.72 and 55,299.72 is: 82,971.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,469.84 : 188,253.72 = 55,299.72 : x
  2. Step 2: Convert to fraction form
    125,469.84/188,253.72 = 55,299.72/x
  3. Step 3: Cross multiply
    125,469.84x = 188,253.72 × 55,299.72
  4. Step 4: Simplify right side
    125,469.84x = 10,410,378,004.96
  5. Step 5: Solve for x
    x = 10,410,378,004.96/125,469.84
  6. Step 6: Final answer
    x = 82,971.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.