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Finding the Fourth Proportional to 29,709.80, 44,543.10 and 12,170.60

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Solution

The fourth proportional to 29,709.80, 44,543.10 and 12,170.60 is: 18,247.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,709.80 : 44,543.10 = 12,170.60 : x
  2. Step 2: Convert to fraction form
    29,709.80/44,543.10 = 12,170.60/x
  3. Step 3: Cross multiply
    29,709.80x = 44,543.10 × 12,170.60
  4. Step 4: Simplify right side
    29,709.80x = 542,116,252.86
  5. Step 5: Solve for x
    x = 542,116,252.86/29,709.80
  6. Step 6: Final answer
    x = 18,247.05

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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.