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Finding the Fourth Proportional to 18,250.56, 25,162.95 and 15,230.03

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Solution

The fourth proportional to 18,250.56, 25,162.95 and 15,230.03 is: 20,998.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,250.56 : 25,162.95 = 15,230.03 : x
  2. Step 2: Convert to fraction form
    18,250.56/25,162.95 = 15,230.03/x
  3. Step 3: Cross multiply
    18,250.56x = 25,162.95 × 15,230.03
  4. Step 4: Simplify right side
    18,250.56x = 383,232,513.39
  5. Step 5: Solve for x
    x = 383,232,513.39/18,250.56
  6. Step 6: Final answer
    x = 20,998.40

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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.