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Finding the Fourth Proportional to 128,244.60, 192,021.30 and 92,993.40

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Solution

The fourth proportional to 128,244.60, 192,021.30 and 92,993.40 is: 139,239.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,244.60 : 192,021.30 = 92,993.40 : x
  2. Step 2: Convert to fraction form
    128,244.60/192,021.30 = 92,993.40/x
  3. Step 3: Cross multiply
    128,244.60x = 192,021.30 × 92,993.40
  4. Step 4: Simplify right side
    128,244.60x = 17,856,713,559.42
  5. Step 5: Solve for x
    x = 17,856,713,559.42/128,244.60
  6. Step 6: Final answer
    x = 139,239.50

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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.