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Finding the Fourth Proportional to 70,074.50, 96,704.86 and 38,245.44

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Solution

The fourth proportional to 70,074.50, 96,704.86 and 38,245.44 is: 52,779.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,074.50 : 96,704.86 = 38,245.44 : x
  2. Step 2: Convert to fraction form
    70,074.50/96,704.86 = 38,245.44/x
  3. Step 3: Cross multiply
    70,074.50x = 96,704.86 × 38,245.44
  4. Step 4: Simplify right side
    70,074.50x = 3,698,519,920.84
  5. Step 5: Solve for x
    x = 3,698,519,920.84/70,074.50
  6. Step 6: Final answer
    x = 52,779.83

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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.