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Finding the Fourth Proportional to 118,610.60, 178,016.70 and 48,540.20

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Solution

The fourth proportional to 118,610.60, 178,016.70 and 48,540.20 is: 72,851.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,610.60 : 178,016.70 = 48,540.20 : x
  2. Step 2: Convert to fraction form
    118,610.60/178,016.70 = 48,540.20/x
  3. Step 3: Cross multiply
    118,610.60x = 178,016.70 × 48,540.20
  4. Step 4: Simplify right side
    118,610.60x = 8,640,966,221.34
  5. Step 5: Solve for x
    x = 8,640,966,221.34/118,610.60
  6. Step 6: Final answer
    x = 72,851.55

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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.