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Finding the Fourth Proportional to 18,266.64, 25,207.72 and 10,311.44

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Solution

The fourth proportional to 18,266.64, 25,207.72 and 10,311.44 is: 14,229.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,266.64 : 25,207.72 = 10,311.44 : x
  2. Step 2: Convert to fraction form
    18,266.64/25,207.72 = 10,311.44/x
  3. Step 3: Cross multiply
    18,266.64x = 25,207.72 × 10,311.44
  4. Step 4: Simplify right side
    18,266.64x = 259,927,892.32
  5. Step 5: Solve for x
    x = 259,927,892.32/18,266.64
  6. Step 6: Final answer
    x = 14,229.65

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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.