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Finding the Fourth Proportional to 118,672.80, 177,951.60 and 66,026.40

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Solution

The fourth proportional to 118,672.80, 177,951.60 and 66,026.40 is: 99,007.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,672.80 : 177,951.60 = 66,026.40 : x
  2. Step 2: Convert to fraction form
    118,672.80/177,951.60 = 66,026.40/x
  3. Step 3: Cross multiply
    118,672.80x = 177,951.60 × 66,026.40
  4. Step 4: Simplify right side
    118,672.80x = 11,749,503,522.24
  5. Step 5: Solve for x
    x = 11,749,503,522.24/118,672.80
  6. Step 6: Final answer
    x = 99,007.55

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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.