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Finding the Fourth Proportional to 18,446.70, 25,459.72 and 10,892.54

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Solution

The fourth proportional to 18,446.70, 25,459.72 and 10,892.54 is: 15,033.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,446.70 : 25,459.72 = 10,892.54 : x
  2. Step 2: Convert to fraction form
    18,446.70/25,459.72 = 10,892.54/x
  3. Step 3: Cross multiply
    18,446.70x = 25,459.72 × 10,892.54
  4. Step 4: Simplify right side
    18,446.70x = 277,321,054.91
  5. Step 5: Solve for x
    x = 277,321,054.91/18,446.70
  6. Step 6: Final answer
    x = 15,033.64

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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.