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Finding the Fourth Proportional to 18,565.61, 25,620.21 and 10,606.55

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Solution

The fourth proportional to 18,565.61, 25,620.21 and 10,606.55 is: 14,636.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,565.61 : 25,620.21 = 10,606.55 : x
  2. Step 2: Convert to fraction form
    18,565.61/25,620.21 = 10,606.55/x
  3. Step 3: Cross multiply
    18,565.61x = 25,620.21 × 10,606.55
  4. Step 4: Simplify right side
    18,565.61x = 271,741,910.27
  5. Step 5: Solve for x
    x = 271,741,910.27/18,565.61
  6. Step 6: Final answer
    x = 14,636.85

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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.