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Finding the Fourth Proportional to 118,398.60, 177,607.20 and 39,512.82

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Solution

The fourth proportional to 118,398.60, 177,607.20 and 39,512.82 is: 59,272.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,398.60 : 177,607.20 = 39,512.82 : x
  2. Step 2: Convert to fraction form
    118,398.60/177,607.20 = 39,512.82/x
  3. Step 3: Cross multiply
    118,398.60x = 177,607.20 × 39,512.82
  4. Step 4: Simplify right side
    118,398.60x = 7,017,761,324.30
  5. Step 5: Solve for x
    x = 7,017,761,324.30/118,398.60
  6. Step 6: Final answer
    x = 59,272.33

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1.5x scale

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.