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Finding the Fourth Proportional to 26,892.80, 40,339.20 and 21,363.20

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Solution

The fourth proportional to 26,892.80, 40,339.20 and 21,363.20 is: 32,044.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,892.80 : 40,339.20 = 21,363.20 : x
  2. Step 2: Convert to fraction form
    26,892.80/40,339.20 = 21,363.20/x
  3. Step 3: Cross multiply
    26,892.80x = 40,339.20 × 21,363.20
  4. Step 4: Simplify right side
    26,892.80x = 861,774,397.44
  5. Step 5: Solve for x
    x = 861,774,397.44/26,892.80
  6. Step 6: Final answer
    x = 32,044.80

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1.5x scale

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.