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Finding the Fourth Proportional to 18,724.91, 25,838.00 and 10,340.91

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Solution

The fourth proportional to 18,724.91, 25,838.00 and 10,340.91 is: 14,269.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,724.91 : 25,838.00 = 10,340.91 : x
  2. Step 2: Convert to fraction form
    18,724.91/25,838.00 = 10,340.91/x
  3. Step 3: Cross multiply
    18,724.91x = 25,838.00 × 10,340.91
  4. Step 4: Simplify right side
    18,724.91x = 267,188,380.88
  5. Step 5: Solve for x
    x = 267,188,380.88/18,724.91
  6. Step 6: Final answer
    x = 14,269.14

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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.