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Finding the Fourth Proportional to 19,481.79, 26,884.89 and 10,529.30

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Solution

The fourth proportional to 19,481.79, 26,884.89 and 10,529.30 is: 14,530.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,481.79 : 26,884.89 = 10,529.30 : x
  2. Step 2: Convert to fraction form
    19,481.79/26,884.89 = 10,529.30/x
  3. Step 3: Cross multiply
    19,481.79x = 26,884.89 × 10,529.30
  4. Step 4: Simplify right side
    19,481.79x = 283,078,937.85
  5. Step 5: Solve for x
    x = 283,078,937.85/19,481.79
  6. Step 6: Final answer
    x = 14,530.44

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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.