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Finding the Fourth Proportional to 57,912.96, 86,722.42 and 48,528.30

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Solution

The fourth proportional to 57,912.96, 86,722.42 and 48,528.30 is: 72,669.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,912.96 : 86,722.42 = 48,528.30 : x
  2. Step 2: Convert to fraction form
    57,912.96/86,722.42 = 48,528.30/x
  3. Step 3: Cross multiply
    57,912.96x = 86,722.42 × 48,528.30
  4. Step 4: Simplify right side
    57,912.96x = 4,208,491,059.55
  5. Step 5: Solve for x
    x = 4,208,491,059.55/57,912.96
  6. Step 6: Final answer
    x = 72,669.25

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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.