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Finding the Fourth Proportional to 26,752.48, 40,128.54 and 20,914

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Solution

The fourth proportional to 26,752.48, 40,128.54 and 20,914 is: 31,370.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,752.48 : 40,128.54 = 20,914 : x
  2. Step 2: Convert to fraction form
    26,752.48/40,128.54 = 20,914/x
  3. Step 3: Cross multiply
    26,752.48x = 40,128.54 × 20,914
  4. Step 4: Simplify right side
    26,752.48x = 839,248,285.56
  5. Step 5: Solve for x
    x = 839,248,285.56/26,752.48
  6. Step 6: Final answer
    x = 31,370.86

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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.