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Finding the Fourth Proportional to 71,912.32, 107,904.86 and 48,489.52

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Solution

The fourth proportional to 71,912.32, 107,904.86 and 48,489.52 is: 72,758.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,912.32 : 107,904.86 = 48,489.52 : x
  2. Step 2: Convert to fraction form
    71,912.32/107,904.86 = 48,489.52/x
  3. Step 3: Cross multiply
    71,912.32x = 107,904.86 × 48,489.52
  4. Step 4: Simplify right side
    71,912.32x = 5,232,254,867.07
  5. Step 5: Solve for x
    x = 5,232,254,867.07/71,912.32
  6. Step 6: Final answer
    x = 72,758.81

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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.