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Finding the Fourth Proportional to 29,700.80, 44,489.10 and 13,919.30

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Solution

The fourth proportional to 29,700.80, 44,489.10 and 13,919.30 is: 20,849.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,700.80 : 44,489.10 = 13,919.30 : x
  2. Step 2: Convert to fraction form
    29,700.80/44,489.10 = 13,919.30/x
  3. Step 3: Cross multiply
    29,700.80x = 44,489.10 × 13,919.30
  4. Step 4: Simplify right side
    29,700.80x = 619,257,129.63
  5. Step 5: Solve for x
    x = 619,257,129.63/29,700.80
  6. Step 6: Final answer
    x = 20,849.85

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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.