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Finding the Fourth Proportional to 26,999.70, 40,485.15 and 11,399.70

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Solution

The fourth proportional to 26,999.70, 40,485.15 and 11,399.70 is: 17,093.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,999.70 : 40,485.15 = 11,399.70 : x
  2. Step 2: Convert to fraction form
    26,999.70/40,485.15 = 11,399.70/x
  3. Step 3: Cross multiply
    26,999.70x = 40,485.15 × 11,399.70
  4. Step 4: Simplify right side
    26,999.70x = 461,518,564.46
  5. Step 5: Solve for x
    x = 461,518,564.46/26,999.70
  6. Step 6: Final answer
    x = 17,093.47

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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.