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Finding the Fourth Proportional to 48,718.40, 67,250.40 and 31,956.80

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Solution

The fourth proportional to 48,718.40, 67,250.40 and 31,956.80 is: 44,112.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,718.40 : 67,250.40 = 31,956.80 : x
  2. Step 2: Convert to fraction form
    48,718.40/67,250.40 = 31,956.80/x
  3. Step 3: Cross multiply
    48,718.40x = 67,250.40 × 31,956.80
  4. Step 4: Simplify right side
    48,718.40x = 2,149,107,582.72
  5. Step 5: Solve for x
    x = 2,149,107,582.72/48,718.40
  6. Step 6: Final answer
    x = 44,112.85

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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.