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Finding the Fourth Proportional to 17,298.20, 25,898.70 and 16,812.20

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Solution

The fourth proportional to 17,298.20, 25,898.70 and 16,812.20 is: 25,171.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,298.20 : 25,898.70 = 16,812.20 : x
  2. Step 2: Convert to fraction form
    17,298.20/25,898.70 = 16,812.20/x
  3. Step 3: Cross multiply
    17,298.20x = 25,898.70 × 16,812.20
  4. Step 4: Simplify right side
    17,298.20x = 435,414,124.14
  5. Step 5: Solve for x
    x = 435,414,124.14/17,298.20
  6. Step 6: Final answer
    x = 25,171.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.