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Finding the Fourth Proportional to 279,665.70, 418,514.40 and 195,028.80

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Solution

The fourth proportional to 279,665.70, 418,514.40 and 195,028.80 is: 291,856.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,665.70 : 418,514.40 = 195,028.80 : x
  2. Step 2: Convert to fraction form
    279,665.70/418,514.40 = 195,028.80/x
  3. Step 3: Cross multiply
    279,665.70x = 418,514.40 × 195,028.80
  4. Step 4: Simplify right side
    279,665.70x = 81,622,361,214.72
  5. Step 5: Solve for x
    x = 81,622,361,214.72/279,665.70
  6. Step 6: Final answer
    x = 291,856.89

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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.