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Finding the Fourth Proportional to 18,426.38, 25,428.38 and 10,468.58

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Solution

The fourth proportional to 18,426.38, 25,428.38 and 10,468.58 is: 14,446.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,426.38 : 25,428.38 = 10,468.58 : x
  2. Step 2: Convert to fraction form
    18,426.38/25,428.38 = 10,468.58/x
  3. Step 3: Cross multiply
    18,426.38x = 25,428.38 × 10,468.58
  4. Step 4: Simplify right side
    18,426.38x = 266,198,850.82
  5. Step 5: Solve for x
    x = 266,198,850.82/18,426.38
  6. Step 6: Final answer
    x = 14,446.62

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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.