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Finding the Fourth Proportional to 192,685.80, 289,028.70 and 103,893.60

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Solution

The fourth proportional to 192,685.80, 289,028.70 and 103,893.60 is: 155,840.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,685.80 : 289,028.70 = 103,893.60 : x
  2. Step 2: Convert to fraction form
    192,685.80/289,028.70 = 103,893.60/x
  3. Step 3: Cross multiply
    192,685.80x = 289,028.70 × 103,893.60
  4. Step 4: Simplify right side
    192,685.80x = 30,028,232,146.32
  5. Step 5: Solve for x
    x = 30,028,232,146.32/192,685.80
  6. Step 6: Final answer
    x = 155,840.40

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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.