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Finding the Fourth Proportional to 72,376.60, 108,584.10 and 25,624.60

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Solution

The fourth proportional to 72,376.60, 108,584.10 and 25,624.60 is: 38,443.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,376.60 : 108,584.10 = 25,624.60 : x
  2. Step 2: Convert to fraction form
    72,376.60/108,584.10 = 25,624.60/x
  3. Step 3: Cross multiply
    72,376.60x = 108,584.10 × 25,624.60
  4. Step 4: Simplify right side
    72,376.60x = 2,782,424,128.86
  5. Step 5: Solve for x
    x = 2,782,424,128.86/72,376.60
  6. Step 6: Final answer
    x = 38,443.70

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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.