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Finding the Fourth Proportional to 26,471.40, 39,694.95 and 11,672.70

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Solution

The fourth proportional to 26,471.40, 39,694.95 and 11,672.70 is: 17,503.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,471.40 : 39,694.95 = 11,672.70 : x
  2. Step 2: Convert to fraction form
    26,471.40/39,694.95 = 11,672.70/x
  3. Step 3: Cross multiply
    26,471.40x = 39,694.95 × 11,672.70
  4. Step 4: Simplify right side
    26,471.40x = 463,347,242.87
  5. Step 5: Solve for x
    x = 463,347,242.87/26,471.40
  6. Step 6: Final answer
    x = 17,503.69

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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.