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Finding the Fourth Proportional to 192,745.20, 289,117.80 and 68,098.80

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Solution

The fourth proportional to 192,745.20, 289,117.80 and 68,098.80 is: 102,148.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,745.20 : 289,117.80 = 68,098.80 : x
  2. Step 2: Convert to fraction form
    192,745.20/289,117.80 = 68,098.80/x
  3. Step 3: Cross multiply
    192,745.20x = 289,117.80 × 68,098.80
  4. Step 4: Simplify right side
    192,745.20x = 19,688,575,238.64
  5. Step 5: Solve for x
    x = 19,688,575,238.64/192,745.20
  6. Step 6: Final answer
    x = 102,148.20

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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.