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Finding the Fourth Proportional to 268,613.40, 403,065.90 and 110,857.80

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Solution

The fourth proportional to 268,613.40, 403,065.90 and 110,857.80 is: 166,346.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,613.40 : 403,065.90 = 110,857.80 : x
  2. Step 2: Convert to fraction form
    268,613.40/403,065.90 = 110,857.80/x
  3. Step 3: Cross multiply
    268,613.40x = 403,065.90 × 110,857.80
  4. Step 4: Simplify right side
    268,613.40x = 44,682,998,929.02
  5. Step 5: Solve for x
    x = 44,682,998,929.02/268,613.40
  6. Step 6: Final answer
    x = 166,346.87

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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.