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Finding the Fourth Proportional to 347,479.90, 521,556.89 and 167,691.85

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Solution

The fourth proportional to 347,479.90, 521,556.89 and 167,691.85 is: 251,700.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,479.90 : 521,556.89 = 167,691.85 : x
  2. Step 2: Convert to fraction form
    347,479.90/521,556.89 = 167,691.85/x
  3. Step 3: Cross multiply
    347,479.90x = 521,556.89 × 167,691.85
  4. Step 4: Simplify right side
    347,479.90x = 87,460,840,835.52
  5. Step 5: Solve for x
    x = 87,460,840,835.52/347,479.90
  6. Step 6: Final answer
    x = 251,700.43

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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.