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Finding the Fourth Proportional to 18,486.92, 25,516.48 and 10,533.84

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Solution

The fourth proportional to 18,486.92, 25,516.48 and 10,533.84 is: 14,539.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,486.92 : 25,516.48 = 10,533.84 : x
  2. Step 2: Convert to fraction form
    18,486.92/25,516.48 = 10,533.84/x
  3. Step 3: Cross multiply
    18,486.92x = 25,516.48 × 10,533.84
  4. Step 4: Simplify right side
    18,486.92x = 268,786,517.68
  5. Step 5: Solve for x
    x = 268,786,517.68/18,486.92
  6. Step 6: Final answer
    x = 14,539.28

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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.