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Finding the Fourth Proportional to 128,174.97, 192,262.47 and 83,839.02

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Solution

The fourth proportional to 128,174.97, 192,262.47 and 83,839.02 is: 125,758.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,174.97 : 192,262.47 = 83,839.02 : x
  2. Step 2: Convert to fraction form
    128,174.97/192,262.47 = 83,839.02/x
  3. Step 3: Cross multiply
    128,174.97x = 192,262.47 × 83,839.02
  4. Step 4: Simplify right side
    128,174.97x = 16,119,097,067.58
  5. Step 5: Solve for x
    x = 16,119,097,067.58/128,174.97
  6. Step 6: Final answer
    x = 125,758.54

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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.