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Finding the Fourth Proportional to 55,679.44, 76,793 and 48,950.80

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Solution

The fourth proportional to 55,679.44, 76,793 and 48,950.80 is: 67,512.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,679.44 : 76,793 = 48,950.80 : x
  2. Step 2: Convert to fraction form
    55,679.44/76,793 = 48,950.80/x
  3. Step 3: Cross multiply
    55,679.44x = 76,793 × 48,950.80
  4. Step 4: Simplify right side
    55,679.44x = 3,759,078,784.40
  5. Step 5: Solve for x
    x = 3,759,078,784.40/55,679.44
  6. Step 6: Final answer
    x = 67,512.87

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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.