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Finding the Fourth Proportional to 178,325.40, 267,340.68 and 139,056.60

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Solution

The fourth proportional to 178,325.40, 267,340.68 and 139,056.60 is: 208,469.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,325.40 : 267,340.68 = 139,056.60 : x
  2. Step 2: Convert to fraction form
    178,325.40/267,340.68 = 139,056.60/x
  3. Step 3: Cross multiply
    178,325.40x = 267,340.68 × 139,056.60
  4. Step 4: Simplify right side
    178,325.40x = 37,175,486,002.49
  5. Step 5: Solve for x
    x = 37,175,486,002.49/178,325.40
  6. Step 6: Final answer
    x = 208,469.94

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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.