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Finding the Fourth Proportional to 45,863.12, 68,790.80 and 32,480.80

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Solution

The fourth proportional to 45,863.12, 68,790.80 and 32,480.80 is: 48,718.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,863.12 : 68,790.80 = 32,480.80 : x
  2. Step 2: Convert to fraction form
    45,863.12/68,790.80 = 32,480.80/x
  3. Step 3: Cross multiply
    45,863.12x = 68,790.80 × 32,480.80
  4. Step 4: Simplify right side
    45,863.12x = 2,234,380,216.64
  5. Step 5: Solve for x
    x = 2,234,380,216.64/45,863.12
  6. Step 6: Final answer
    x = 48,718.45

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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.