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Finding the Fourth Proportional to 172,961.67, 259,421.04 and 46,611.80

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Solution

The fourth proportional to 172,961.67, 259,421.04 and 46,611.80 is: 69,911.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,961.67 : 259,421.04 = 46,611.80 : x
  2. Step 2: Convert to fraction form
    172,961.67/259,421.04 = 46,611.80/x
  3. Step 3: Cross multiply
    172,961.67x = 259,421.04 × 46,611.80
  4. Step 4: Simplify right side
    172,961.67x = 12,092,081,632.27
  5. Step 5: Solve for x
    x = 12,092,081,632.27/172,961.67
  6. Step 6: Final answer
    x = 69,911.92

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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.