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Finding the Fourth Proportional to 72,378.44, 108,569.08 and 47,576.60

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Solution

The fourth proportional to 72,378.44, 108,569.08 and 47,576.60 is: 71,365.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,378.44 : 108,569.08 = 47,576.60 : x
  2. Step 2: Convert to fraction form
    72,378.44/108,569.08 = 47,576.60/x
  3. Step 3: Cross multiply
    72,378.44x = 108,569.08 × 47,576.60
  4. Step 4: Simplify right side
    72,378.44x = 5,165,347,691.53
  5. Step 5: Solve for x
    x = 5,165,347,691.53/72,378.44
  6. Step 6: Final answer
    x = 71,365.83

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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.