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Finding the Fourth Proportional to 118,837.76, 178,242.72 and 47,757.52

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Solution

The fourth proportional to 118,837.76, 178,242.72 and 47,757.52 is: 71,630.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,837.76 : 178,242.72 = 47,757.52 : x
  2. Step 2: Convert to fraction form
    118,837.76/178,242.72 = 47,757.52/x
  3. Step 3: Cross multiply
    118,837.76x = 178,242.72 × 47,757.52
  4. Step 4: Simplify right side
    118,837.76x = 8,512,430,265.25
  5. Step 5: Solve for x
    x = 8,512,430,265.25/118,837.76
  6. Step 6: Final answer
    x = 71,630.69

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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.