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Finding the Fourth Proportional to 118,912.40, 178,368.60 and 48,755.60

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Solution

The fourth proportional to 118,912.40, 178,368.60 and 48,755.60 is: 73,133.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,912.40 : 178,368.60 = 48,755.60 : x
  2. Step 2: Convert to fraction form
    118,912.40/178,368.60 = 48,755.60/x
  3. Step 3: Cross multiply
    118,912.40x = 178,368.60 × 48,755.60
  4. Step 4: Simplify right side
    118,912.40x = 8,696,468,114.16
  5. Step 5: Solve for x
    x = 8,696,468,114.16/118,912.40
  6. Step 6: Final answer
    x = 73,133.40

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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.