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Finding the Fourth Proportional to 449,791.62, 674,798.16 and 316,931.34

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Solution

The fourth proportional to 449,791.62, 674,798.16 and 316,931.34 is: 475,475.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,791.62 : 674,798.16 = 316,931.34 : x
  2. Step 2: Convert to fraction form
    449,791.62/674,798.16 = 316,931.34/x
  3. Step 3: Cross multiply
    449,791.62x = 674,798.16 × 316,931.34
  4. Step 4: Simplify right side
    449,791.62x = 213,864,685,078.33
  5. Step 5: Solve for x
    x = 213,864,685,078.33/449,791.62
  6. Step 6: Final answer
    x = 475,475.03

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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.