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Finding the Fourth Proportional to 178,768.40, 268,073.40 and 60,407.60

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Solution

The fourth proportional to 178,768.40, 268,073.40 and 60,407.60 is: 90,584.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,768.40 : 268,073.40 = 60,407.60 : x
  2. Step 2: Convert to fraction form
    178,768.40/268,073.40 = 60,407.60/x
  3. Step 3: Cross multiply
    178,768.40x = 268,073.40 × 60,407.60
  4. Step 4: Simplify right side
    178,768.40x = 16,193,670,717.84
  5. Step 5: Solve for x
    x = 16,193,670,717.84/178,768.40
  6. Step 6: Final answer
    x = 90,584.64

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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.