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Finding the Fourth Proportional to 138,934.80, 195,033.60 and 138,934.80

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Solution

The fourth proportional to 138,934.80, 195,033.60 and 138,934.80 is: 195,033.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,934.80 : 195,033.60 = 138,934.80 : x
  2. Step 2: Convert to fraction form
    138,934.80/195,033.60 = 138,934.80/x
  3. Step 3: Cross multiply
    138,934.80x = 195,033.60 × 138,934.80
  4. Step 4: Simplify right side
    138,934.80x = 27,096,954,209.28
  5. Step 5: Solve for x
    x = 27,096,954,209.28/138,934.80
  6. Step 6: Final answer
    x = 195,033.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.