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Finding the Fourth Proportional to 72,613.44, 108,745.16 and 41,353.92

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Solution

The fourth proportional to 72,613.44, 108,745.16 and 41,353.92 is: 61,931.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,613.44 : 108,745.16 = 41,353.92 : x
  2. Step 2: Convert to fraction form
    72,613.44/108,745.16 = 41,353.92/x
  3. Step 3: Cross multiply
    72,613.44x = 108,745.16 × 41,353.92
  4. Step 4: Simplify right side
    72,613.44x = 4,497,038,647.03
  5. Step 5: Solve for x
    x = 4,497,038,647.03/72,613.44
  6. Step 6: Final answer
    x = 61,931.22

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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.