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Finding the Fourth Proportional to 266,398.85, 399,612.12 and 133,234.12

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Solution

The fourth proportional to 266,398.85, 399,612.12 and 133,234.12 is: 199,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,398.85 : 399,612.12 = 133,234.12 : x
  2. Step 2: Convert to fraction form
    266,398.85/399,612.12 = 133,234.12/x
  3. Step 3: Cross multiply
    266,398.85x = 399,612.12 × 133,234.12
  4. Step 4: Simplify right side
    266,398.85x = 53,241,968,150.50
  5. Step 5: Solve for x
    x = 53,241,968,150.50/266,398.85
  6. Step 6: Final answer
    x = 199,858.10

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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.