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Finding the Fourth Proportional to 48,443.20, 72,664.80 and 34,446.40

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Solution

The fourth proportional to 48,443.20, 72,664.80 and 34,446.40 is: 51,669.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,443.20 : 72,664.80 = 34,446.40 : x
  2. Step 2: Convert to fraction form
    48,443.20/72,664.80 = 34,446.40/x
  3. Step 3: Cross multiply
    48,443.20x = 72,664.80 × 34,446.40
  4. Step 4: Simplify right side
    48,443.20x = 2,503,040,766.72
  5. Step 5: Solve for x
    x = 2,503,040,766.72/48,443.20
  6. Step 6: Final answer
    x = 51,669.60

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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.