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Finding the Fourth Proportional to 192,690.80, 289,036.20 and 103,898.60

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Solution

The fourth proportional to 192,690.80, 289,036.20 and 103,898.60 is: 155,847.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,690.80 : 289,036.20 = 103,898.60 : x
  2. Step 2: Convert to fraction form
    192,690.80/289,036.20 = 103,898.60/x
  3. Step 3: Cross multiply
    192,690.80x = 289,036.20 × 103,898.60
  4. Step 4: Simplify right side
    192,690.80x = 30,030,456,529.32
  5. Step 5: Solve for x
    x = 30,030,456,529.32/192,690.80
  6. Step 6: Final answer
    x = 155,847.90

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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.