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Finding the Fourth Proportional to 178,265.52, 267,392.79 and 73,005.21

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Solution

The fourth proportional to 178,265.52, 267,392.79 and 73,005.21 is: 109,505.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,265.52 : 267,392.79 = 73,005.21 : x
  2. Step 2: Convert to fraction form
    178,265.52/267,392.79 = 73,005.21/x
  3. Step 3: Cross multiply
    178,265.52x = 267,392.79 × 73,005.21
  4. Step 4: Simplify right side
    178,265.52x = 19,521,066,786.44
  5. Step 5: Solve for x
    x = 19,521,066,786.44/178,265.52
  6. Step 6: Final answer
    x = 109,505.57

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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.