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Finding the Fourth Proportional to 198,667.40, 298,001.10 and 189,451.40

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Solution

The fourth proportional to 198,667.40, 298,001.10 and 189,451.40 is: 284,177.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,667.40 : 298,001.10 = 189,451.40 : x
  2. Step 2: Convert to fraction form
    198,667.40/298,001.10 = 189,451.40/x
  3. Step 3: Cross multiply
    198,667.40x = 298,001.10 × 189,451.40
  4. Step 4: Simplify right side
    198,667.40x = 56,456,725,596.54
  5. Step 5: Solve for x
    x = 56,456,725,596.54/198,667.40
  6. Step 6: Final answer
    x = 284,177.10

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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.