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Finding the Fourth Proportional to 66,933.60, 100,203.12 and 58,629.84

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Solution

The fourth proportional to 66,933.60, 100,203.12 and 58,629.84 is: 87,771.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,933.60 : 100,203.12 = 58,629.84 : x
  2. Step 2: Convert to fraction form
    66,933.60/100,203.12 = 58,629.84/x
  3. Step 3: Cross multiply
    66,933.60x = 100,203.12 × 58,629.84
  4. Step 4: Simplify right side
    66,933.60x = 5,874,892,893.10
  5. Step 5: Solve for x
    x = 5,874,892,893.10/66,933.60
  6. Step 6: Final answer
    x = 87,771.95

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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.