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Finding the Fourth Proportional to 125,453.61, 188,140.78 and 41,199.89

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Solution

The fourth proportional to 125,453.61, 188,140.78 and 41,199.89 is: 61,786.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,453.61 : 188,140.78 = 41,199.89 : x
  2. Step 2: Convert to fraction form
    125,453.61/188,140.78 = 41,199.89/x
  3. Step 3: Cross multiply
    125,453.61x = 188,140.78 × 41,199.89
  4. Step 4: Simplify right side
    125,453.61x = 7,751,380,315.13
  5. Step 5: Solve for x
    x = 7,751,380,315.13/125,453.61
  6. Step 6: Final answer
    x = 61,786.82

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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.