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Finding the Fourth Proportional to 469,885.28, 648,425.24 and 255,021.04

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Solution

The fourth proportional to 469,885.28, 648,425.24 and 255,021.04 is: 351,920.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,885.28 : 648,425.24 = 255,021.04 : x
  2. Step 2: Convert to fraction form
    469,885.28/648,425.24 = 255,021.04/x
  3. Step 3: Cross multiply
    469,885.28x = 648,425.24 × 255,021.04
  4. Step 4: Simplify right side
    469,885.28x = 165,362,079,067.05
  5. Step 5: Solve for x
    x = 165,362,079,067.05/469,885.28
  6. Step 6: Final answer
    x = 351,920.11

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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.