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Finding the Fourth Proportional to 26,867.30, 40,264.04 and 13,691.99

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Solution

The fourth proportional to 26,867.30, 40,264.04 and 13,691.99 is: 20,519.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,867.30 : 40,264.04 = 13,691.99 : x
  2. Step 2: Convert to fraction form
    26,867.30/40,264.04 = 13,691.99/x
  3. Step 3: Cross multiply
    26,867.30x = 40,264.04 × 13,691.99
  4. Step 4: Simplify right side
    26,867.30x = 551,294,664.43
  5. Step 5: Solve for x
    x = 551,294,664.43/26,867.30
  6. Step 6: Final answer
    x = 20,519.17

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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.