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Finding the Fourth Proportional to 72,626.40, 108,939.60 and 41,464.80

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Solution

The fourth proportional to 72,626.40, 108,939.60 and 41,464.80 is: 62,197.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,626.40 : 108,939.60 = 41,464.80 : x
  2. Step 2: Convert to fraction form
    72,626.40/108,939.60 = 41,464.80/x
  3. Step 3: Cross multiply
    72,626.40x = 108,939.60 × 41,464.80
  4. Step 4: Simplify right side
    72,626.40x = 4,517,158,726.08
  5. Step 5: Solve for x
    x = 4,517,158,726.08/72,626.40
  6. Step 6: Final answer
    x = 62,197.20

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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.