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Finding the Fourth Proportional to 18,912.77, 26,098.43 and 11,354.63

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Solution

The fourth proportional to 18,912.77, 26,098.43 and 11,354.63 is: 15,668.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,912.77 : 26,098.43 = 11,354.63 : x
  2. Step 2: Convert to fraction form
    18,912.77/26,098.43 = 11,354.63/x
  3. Step 3: Cross multiply
    18,912.77x = 26,098.43 × 11,354.63
  4. Step 4: Simplify right side
    18,912.77x = 296,338,007.70
  5. Step 5: Solve for x
    x = 296,338,007.70/18,912.77
  6. Step 6: Final answer
    x = 15,668.68

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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.