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Finding the Fourth Proportional to 43,174.80, 64,778.40 and 16,898.40

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Solution

The fourth proportional to 43,174.80, 64,778.40 and 16,898.40 is: 25,353.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,174.80 : 64,778.40 = 16,898.40 : x
  2. Step 2: Convert to fraction form
    43,174.80/64,778.40 = 16,898.40/x
  3. Step 3: Cross multiply
    43,174.80x = 64,778.40 × 16,898.40
  4. Step 4: Simplify right side
    43,174.80x = 1,094,651,314.56
  5. Step 5: Solve for x
    x = 1,094,651,314.56/43,174.80
  6. Step 6: Final answer
    x = 25,353.94

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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.