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Finding the Fourth Proportional to 128,949.00, 193,424.74 and 38,992.42

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Solution

The fourth proportional to 128,949.00, 193,424.74 and 38,992.42 is: 58,489.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,949.00 : 193,424.74 = 38,992.42 : x
  2. Step 2: Convert to fraction form
    128,949.00/193,424.74 = 38,992.42/x
  3. Step 3: Cross multiply
    128,949.00x = 193,424.74 × 38,992.42
  4. Step 4: Simplify right side
    128,949.00x = 7,542,099,064.10
  5. Step 5: Solve for x
    x = 7,542,099,064.10/128,949.00
  6. Step 6: Final answer
    x = 58,489.01

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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.