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Finding the Fourth Proportional to 291,449.83, 436,613.87 and 178,801.11

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Solution

The fourth proportional to 291,449.83, 436,613.87 and 178,801.11 is: 267,857.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,449.83 : 436,613.87 = 178,801.11 : x
  2. Step 2: Convert to fraction form
    291,449.83/436,613.87 = 178,801.11/x
  3. Step 3: Cross multiply
    291,449.83x = 436,613.87 × 178,801.11
  4. Step 4: Simplify right side
    291,449.83x = 78,067,044,597.40
  5. Step 5: Solve for x
    x = 78,067,044,597.40/291,449.83
  6. Step 6: Final answer
    x = 267,857.57

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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.