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Finding the Fourth Proportional to 18,565.73, 25,611.64 and 10,605.86

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Solution

The fourth proportional to 18,565.73, 25,611.64 and 10,605.86 is: 14,630.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,565.73 : 25,611.64 = 10,605.86 : x
  2. Step 2: Convert to fraction form
    18,565.73/25,611.64 = 10,605.86/x
  3. Step 3: Cross multiply
    18,565.73x = 25,611.64 × 10,605.86
  4. Step 4: Simplify right side
    18,565.73x = 271,633,340.15
  5. Step 5: Solve for x
    x = 271,633,340.15/18,565.73
  6. Step 6: Final answer
    x = 14,630.90

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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.