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Finding the Fourth Proportional to 192,893.80, 289,340.70 and 66,533.80

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Solution

The fourth proportional to 192,893.80, 289,340.70 and 66,533.80 is: 99,800.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,893.80 : 289,340.70 = 66,533.80 : x
  2. Step 2: Convert to fraction form
    192,893.80/289,340.70 = 66,533.80/x
  3. Step 3: Cross multiply
    192,893.80x = 289,340.70 × 66,533.80
  4. Step 4: Simplify right side
    192,893.80x = 19,250,936,265.66
  5. Step 5: Solve for x
    x = 19,250,936,265.66/192,893.80
  6. Step 6: Final answer
    x = 99,800.70

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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.