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Finding the Fourth Proportional to 199,324.80, 298,468.80 and 128,822.40

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Solution

The fourth proportional to 199,324.80, 298,468.80 and 128,822.40 is: 192,898.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,324.80 : 298,468.80 = 128,822.40 : x
  2. Step 2: Convert to fraction form
    199,324.80/298,468.80 = 128,822.40/x
  3. Step 3: Cross multiply
    199,324.80x = 298,468.80 × 128,822.40
  4. Step 4: Simplify right side
    199,324.80x = 38,449,467,141.12
  5. Step 5: Solve for x
    x = 38,449,467,141.12/199,324.80
  6. Step 6: Final answer
    x = 192,898.56

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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.