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Finding the Fourth Proportional to 18,604.40, 25,673.64 and 10,648.40

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Solution

The fourth proportional to 18,604.40, 25,673.64 and 10,648.40 is: 14,694.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,604.40 : 25,673.64 = 10,648.40 : x
  2. Step 2: Convert to fraction form
    18,604.40/25,673.64 = 10,648.40/x
  3. Step 3: Cross multiply
    18,604.40x = 25,673.64 × 10,648.40
  4. Step 4: Simplify right side
    18,604.40x = 273,383,188.18
  5. Step 5: Solve for x
    x = 273,383,188.18/18,604.40
  6. Step 6: Final answer
    x = 14,694.54

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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.