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Finding the Fourth Proportional to 18,969.80, 26,177.85 and 10,471.59

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Solution

The fourth proportional to 18,969.80, 26,177.85 and 10,471.59 is: 14,450.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,969.80 : 26,177.85 = 10,471.59 : x
  2. Step 2: Convert to fraction form
    18,969.80/26,177.85 = 10,471.59/x
  3. Step 3: Cross multiply
    18,969.80x = 26,177.85 × 10,471.59
  4. Step 4: Simplify right side
    18,969.80x = 274,123,712.28
  5. Step 5: Solve for x
    x = 274,123,712.28/18,969.80
  6. Step 6: Final answer
    x = 14,450.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.