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Finding the Fourth Proportional to 19,453.76, 26,845.72 and 10,839.88

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Solution

The fourth proportional to 19,453.76, 26,845.72 and 10,839.88 is: 14,958.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,453.76 : 26,845.72 = 10,839.88 : x
  2. Step 2: Convert to fraction form
    19,453.76/26,845.72 = 10,839.88/x
  3. Step 3: Cross multiply
    19,453.76x = 26,845.72 × 10,839.88
  4. Step 4: Simplify right side
    19,453.76x = 291,004,383.31
  5. Step 5: Solve for x
    x = 291,004,383.31/19,453.76
  6. Step 6: Final answer
    x = 14,958.77

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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.