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Finding the Fourth Proportional to 18,163.92, 25,061.76 and 10,605.96

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Solution

The fourth proportional to 18,163.92, 25,061.76 and 10,605.96 is: 14,633.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,163.92 : 25,061.76 = 10,605.96 : x
  2. Step 2: Convert to fraction form
    18,163.92/25,061.76 = 10,605.96/x
  3. Step 3: Cross multiply
    18,163.92x = 25,061.76 × 10,605.96
  4. Step 4: Simplify right side
    18,163.92x = 265,804,024.09
  5. Step 5: Solve for x
    x = 265,804,024.09/18,163.92
  6. Step 6: Final answer
    x = 14,633.63

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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.