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Finding the Fourth Proportional to 26,921.80, 40,389.90 and 24,020.20

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Solution

The fourth proportional to 26,921.80, 40,389.90 and 24,020.20 is: 36,036.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,921.80 : 40,389.90 = 24,020.20 : x
  2. Step 2: Convert to fraction form
    26,921.80/40,389.90 = 24,020.20/x
  3. Step 3: Cross multiply
    26,921.80x = 40,389.90 × 24,020.20
  4. Step 4: Simplify right side
    26,921.80x = 970,173,475.98
  5. Step 5: Solve for x
    x = 970,173,475.98/26,921.80
  6. Step 6: Final answer
    x = 36,036.72

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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.