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Finding the Fourth Proportional to 79,615.99, 109,919.16 and 54,794.91

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Solution

The fourth proportional to 79,615.99, 109,919.16 and 54,794.91 is: 75,650.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,615.99 : 109,919.16 = 54,794.91 : x
  2. Step 2: Convert to fraction form
    79,615.99/109,919.16 = 54,794.91/x
  3. Step 3: Cross multiply
    79,615.99x = 109,919.16 × 54,794.91
  4. Step 4: Simplify right side
    79,615.99x = 6,023,010,205.50
  5. Step 5: Solve for x
    x = 6,023,010,205.50/79,615.99
  6. Step 6: Final answer
    x = 75,650.76

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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.