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Finding the Fourth Proportional to 133,234.30, 199,960.80 and 128,860.30

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Solution

The fourth proportional to 133,234.30, 199,960.80 and 128,860.30 is: 193,396.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,234.30 : 199,960.80 = 128,860.30 : x
  2. Step 2: Convert to fraction form
    133,234.30/199,960.80 = 128,860.30/x
  3. Step 3: Cross multiply
    133,234.30x = 199,960.80 × 128,860.30
  4. Step 4: Simplify right side
    133,234.30x = 25,767,008,676.24
  5. Step 5: Solve for x
    x = 25,767,008,676.24/133,234.30
  6. Step 6: Final answer
    x = 193,396.21

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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.