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Finding the Fourth Proportional to 32,471.20, 48,708.40 and 16,919.20

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Solution

The fourth proportional to 32,471.20, 48,708.40 and 16,919.20 is: 25,379.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,471.20 : 48,708.40 = 16,919.20 : x
  2. Step 2: Convert to fraction form
    32,471.20/48,708.40 = 16,919.20/x
  3. Step 3: Cross multiply
    32,471.20x = 48,708.40 × 16,919.20
  4. Step 4: Simplify right side
    32,471.20x = 824,107,161.28
  5. Step 5: Solve for x
    x = 824,107,161.28/32,471.20
  6. Step 6: Final answer
    x = 25,379.63

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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.