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Finding the Fourth Proportional to 18,557.12, 25,609.12 and 10,173.12

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Solution

The fourth proportional to 18,557.12, 25,609.12 and 10,173.12 is: 14,039.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,557.12 : 25,609.12 = 10,173.12 : x
  2. Step 2: Convert to fraction form
    18,557.12/25,609.12 = 10,173.12/x
  3. Step 3: Cross multiply
    18,557.12x = 25,609.12 × 10,173.12
  4. Step 4: Simplify right side
    18,557.12x = 260,524,650.85
  5. Step 5: Solve for x
    x = 260,524,650.85/18,557.12
  6. Step 6: Final answer
    x = 14,039.07

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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.