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Finding the Fourth Proportional to 12,372.75, 18,565.50 and 7,932.77

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Solution

The fourth proportional to 12,372.75, 18,565.50 and 7,932.77 is: 11,903.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,372.75 : 18,565.50 = 7,932.77 : x
  2. Step 2: Convert to fraction form
    12,372.75/18,565.50 = 7,932.77/x
  3. Step 3: Cross multiply
    12,372.75x = 18,565.50 × 7,932.77
  4. Step 4: Simplify right side
    12,372.75x = 147,275,847.98
  5. Step 5: Solve for x
    x = 147,275,847.98/12,372.75
  6. Step 6: Final answer
    x = 11,903.24

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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.