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Finding the Fourth Proportional to 18,676.63, 25,778.15 and 16,785.01

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Solution

The fourth proportional to 18,676.63, 25,778.15 and 16,785.01 is: 23,167.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,676.63 : 25,778.15 = 16,785.01 : x
  2. Step 2: Convert to fraction form
    18,676.63/25,778.15 = 16,785.01/x
  3. Step 3: Cross multiply
    18,676.63x = 25,778.15 × 16,785.01
  4. Step 4: Simplify right side
    18,676.63x = 432,686,505.53
  5. Step 5: Solve for x
    x = 432,686,505.53/18,676.63
  6. Step 6: Final answer
    x = 23,167.27

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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.