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Finding the Fourth Proportional to 192,993.12, 289,572.30 and 80,699.58

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Solution

The fourth proportional to 192,993.12, 289,572.30 and 80,699.58 is: 121,083.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,993.12 : 289,572.30 = 80,699.58 : x
  2. Step 2: Convert to fraction form
    192,993.12/289,572.30 = 80,699.58/x
  3. Step 3: Cross multiply
    192,993.12x = 289,572.30 × 80,699.58
  4. Step 4: Simplify right side
    192,993.12x = 23,368,362,989.63
  5. Step 5: Solve for x
    x = 23,368,362,989.63/192,993.12
  6. Step 6: Final answer
    x = 121,083.92

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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.