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Finding the Fourth Proportional to 378,667.52, 567,602.55 and 125,880.17

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Solution

The fourth proportional to 378,667.52, 567,602.55 and 125,880.17 is: 188,687.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,667.52 : 567,602.55 = 125,880.17 : x
  2. Step 2: Convert to fraction form
    378,667.52/567,602.55 = 125,880.17/x
  3. Step 3: Cross multiply
    378,667.52x = 567,602.55 × 125,880.17
  4. Step 4: Simplify right side
    378,667.52x = 71,449,905,486.43
  5. Step 5: Solve for x
    x = 71,449,905,486.43/378,667.52
  6. Step 6: Final answer
    x = 188,687.71

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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.