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Finding the Fourth Proportional to 481,215.30, 664,007.61 and 266,354.85

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Solution

The fourth proportional to 481,215.30, 664,007.61 and 266,354.85 is: 367,531.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,215.30 : 664,007.61 = 266,354.85 : x
  2. Step 2: Convert to fraction form
    481,215.30/664,007.61 = 266,354.85/x
  3. Step 3: Cross multiply
    481,215.30x = 664,007.61 × 266,354.85
  4. Step 4: Simplify right side
    481,215.30x = 176,861,646,028.63
  5. Step 5: Solve for x
    x = 176,861,646,028.63/481,215.30
  6. Step 6: Final answer
    x = 367,531.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.