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Finding the Fourth Proportional to 192,605.67, 289,022.76 and 87,423.12

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Solution

The fourth proportional to 192,605.67, 289,022.76 and 87,423.12 is: 131,186.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,605.67 : 289,022.76 = 87,423.12 : x
  2. Step 2: Convert to fraction form
    192,605.67/289,022.76 = 87,423.12/x
  3. Step 3: Cross multiply
    192,605.67x = 289,022.76 × 87,423.12
  4. Step 4: Simplify right side
    192,605.67x = 25,267,271,430.21
  5. Step 5: Solve for x
    x = 25,267,271,430.21/192,605.67
  6. Step 6: Final answer
    x = 131,186.54

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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.