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Finding the Fourth Proportional to 128,535.60, 193,033.80 and 93,514.80

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Solution

The fourth proportional to 128,535.60, 193,033.80 and 93,514.80 is: 140,439.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,535.60 : 193,033.80 = 93,514.80 : x
  2. Step 2: Convert to fraction form
    128,535.60/193,033.80 = 93,514.80/x
  3. Step 3: Cross multiply
    128,535.60x = 193,033.80 × 93,514.80
  4. Step 4: Simplify right side
    128,535.60x = 18,051,517,200.24
  5. Step 5: Solve for x
    x = 18,051,517,200.24/128,535.60
  6. Step 6: Final answer
    x = 140,439.83

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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.