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Finding the Fourth Proportional to 192,607.68, 289,025.76 and 87,425.12

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Solution

The fourth proportional to 192,607.68, 289,025.76 and 87,425.12 is: 131,189.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,607.68 : 289,025.76 = 87,425.12 : x
  2. Step 2: Convert to fraction form
    192,607.68/289,025.76 = 87,425.12/x
  3. Step 3: Cross multiply
    192,607.68x = 289,025.76 × 87,425.12
  4. Step 4: Simplify right side
    192,607.68x = 25,268,111,751.09
  5. Step 5: Solve for x
    x = 25,268,111,751.09/192,607.68
  6. Step 6: Final answer
    x = 131,189.53

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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.