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Finding the Fourth Proportional to 76,100.11, 105,025.92 and 43,835.78

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Solution

The fourth proportional to 76,100.11, 105,025.92 and 43,835.78 is: 60,497.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,100.11 : 105,025.92 = 43,835.78 : x
  2. Step 2: Convert to fraction form
    76,100.11/105,025.92 = 43,835.78/x
  3. Step 3: Cross multiply
    76,100.11x = 105,025.92 × 43,835.78
  4. Step 4: Simplify right side
    76,100.11x = 4,603,893,221.60
  5. Step 5: Solve for x
    x = 4,603,893,221.60/76,100.11
  6. Step 6: Final answer
    x = 60,497.85

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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.