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Finding the Fourth Proportional to 76,607.72, 115,019.22 and 39,194.64

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Solution

The fourth proportional to 76,607.72, 115,019.22 and 39,194.64 is: 58,847.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,607.72 : 115,019.22 = 39,194.64 : x
  2. Step 2: Convert to fraction form
    76,607.72/115,019.22 = 39,194.64/x
  3. Step 3: Cross multiply
    76,607.72x = 115,019.22 × 39,194.64
  4. Step 4: Simplify right side
    76,607.72x = 4,508,136,920.98
  5. Step 5: Solve for x
    x = 4,508,136,920.98/76,607.72
  6. Step 6: Final answer
    x = 58,847.03

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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.