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Finding the Fourth Proportional to 48,168.60, 72,255.75 and 18,586.59

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Solution

The fourth proportional to 48,168.60, 72,255.75 and 18,586.59 is: 27,880.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,168.60 : 72,255.75 = 18,586.59 : x
  2. Step 2: Convert to fraction form
    48,168.60/72,255.75 = 18,586.59/x
  3. Step 3: Cross multiply
    48,168.60x = 72,255.75 × 18,586.59
  4. Step 4: Simplify right side
    48,168.60x = 1,342,988,000.39
  5. Step 5: Solve for x
    x = 1,342,988,000.39/48,168.60
  6. Step 6: Final answer
    x = 27,880.98

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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.