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Finding the Fourth Proportional to 18,487.64, 25,512.57 and 10,832.79

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Solution

The fourth proportional to 18,487.64, 25,512.57 and 10,832.79 is: 14,949.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,487.64 : 25,512.57 = 10,832.79 : x
  2. Step 2: Convert to fraction form
    18,487.64/25,512.57 = 10,832.79/x
  3. Step 3: Cross multiply
    18,487.64x = 25,512.57 × 10,832.79
  4. Step 4: Simplify right side
    18,487.64x = 276,372,313.17
  5. Step 5: Solve for x
    x = 276,372,313.17/18,487.64
  6. Step 6: Final answer
    x = 14,949.04

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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.