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Finding the Fourth Proportional to 67,108.86, 100,641.72 and 29,668.08

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Solution

The fourth proportional to 67,108.86, 100,641.72 and 29,668.08 is: 44,492.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,108.86 : 100,641.72 = 29,668.08 : x
  2. Step 2: Convert to fraction form
    67,108.86/100,641.72 = 29,668.08/x
  3. Step 3: Cross multiply
    67,108.86x = 100,641.72 × 29,668.08
  4. Step 4: Simplify right side
    67,108.86x = 2,985,846,600.30
  5. Step 5: Solve for x
    x = 2,985,846,600.30/67,108.86
  6. Step 6: Final answer
    x = 44,492.58

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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.