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Finding the Fourth Proportional to 192,989.93, 289,536.80 and 80,632.80

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Solution

The fourth proportional to 192,989.93, 289,536.80 and 80,632.80 is: 120,970.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,989.93 : 289,536.80 = 80,632.80 : x
  2. Step 2: Convert to fraction form
    192,989.93/289,536.80 = 80,632.80/x
  3. Step 3: Cross multiply
    192,989.93x = 289,536.80 × 80,632.80
  4. Step 4: Simplify right side
    192,989.93x = 23,346,162,483.88
  5. Step 5: Solve for x
    x = 23,346,162,483.88/192,989.93
  6. Step 6: Final answer
    x = 120,970.89

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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.