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Finding the Fourth Proportional to 18,164.32, 25,106.16 and 16,764.64

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Solution

The fourth proportional to 18,164.32, 25,106.16 and 16,764.64 is: 23,171.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,164.32 : 25,106.16 = 16,764.64 : x
  2. Step 2: Convert to fraction form
    18,164.32/25,106.16 = 16,764.64/x
  3. Step 3: Cross multiply
    18,164.32x = 25,106.16 × 16,764.64
  4. Step 4: Simplify right side
    18,164.32x = 420,895,734.18
  5. Step 5: Solve for x
    x = 420,895,734.18/18,164.32
  6. Step 6: Final answer
    x = 23,171.57

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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.