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Finding the Fourth Proportional to 18,489.52, 25,456.44 and 14,964.40

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Solution

The fourth proportional to 18,489.52, 25,456.44 and 14,964.40 is: 20,603.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,489.52 : 25,456.44 = 14,964.40 : x
  2. Step 2: Convert to fraction form
    18,489.52/25,456.44 = 14,964.40/x
  3. Step 3: Cross multiply
    18,489.52x = 25,456.44 × 14,964.40
  4. Step 4: Simplify right side
    18,489.52x = 380,940,350.74
  5. Step 5: Solve for x
    x = 380,940,350.74/18,489.52
  6. Step 6: Final answer
    x = 20,603.04

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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.