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Finding the Fourth Proportional to 458,679.11, 632,974.72 and 251,951.57

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Solution

The fourth proportional to 458,679.11, 632,974.72 and 251,951.57 is: 347,691.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,679.11 : 632,974.72 = 251,951.57 : x
  2. Step 2: Convert to fraction form
    458,679.11/632,974.72 = 251,951.57/x
  3. Step 3: Cross multiply
    458,679.11x = 632,974.72 × 251,951.57
  4. Step 4: Simplify right side
    458,679.11x = 159,478,974,474.31
  5. Step 5: Solve for x
    x = 159,478,974,474.31/458,679.11
  6. Step 6: Final answer
    x = 347,691.82

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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.