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Finding the Fourth Proportional to 125,940.78, 187,928.84 and 114,762.78

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Solution

The fourth proportional to 125,940.78, 187,928.84 and 114,762.78 is: 171,249.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,940.78 : 187,928.84 = 114,762.78 : x
  2. Step 2: Convert to fraction form
    125,940.78/187,928.84 = 114,762.78/x
  3. Step 3: Cross multiply
    125,940.78x = 187,928.84 × 114,762.78
  4. Step 4: Simplify right side
    125,940.78x = 21,567,235,546.76
  5. Step 5: Solve for x
    x = 21,567,235,546.76/125,940.78
  6. Step 6: Final answer
    x = 171,249.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.