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Finding the Fourth Proportional to 18,308.91, 25,266.72 and 10,351.61

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Solution

The fourth proportional to 18,308.91, 25,266.72 and 10,351.61 is: 14,285.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,308.91 : 25,266.72 = 10,351.61 : x
  2. Step 2: Convert to fraction form
    18,308.91/25,266.72 = 10,351.61/x
  3. Step 3: Cross multiply
    18,308.91x = 25,266.72 × 10,351.61
  4. Step 4: Simplify right side
    18,308.91x = 261,551,143.90
  5. Step 5: Solve for x
    x = 261,551,143.90/18,308.91
  6. Step 6: Final answer
    x = 14,285.46

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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.