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Finding the Fourth Proportional to 266,191.20, 399,578.40 and 148,093.20

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Solution

The fourth proportional to 266,191.20, 399,578.40 and 148,093.20 is: 222,302.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,191.20 : 399,578.40 = 148,093.20 : x
  2. Step 2: Convert to fraction form
    266,191.20/399,578.40 = 148,093.20/x
  3. Step 3: Cross multiply
    266,191.20x = 399,578.40 × 148,093.20
  4. Step 4: Simplify right side
    266,191.20x = 59,174,843,906.88
  5. Step 5: Solve for x
    x = 59,174,843,906.88/266,191.20
  6. Step 6: Final answer
    x = 222,302.03

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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.