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Finding the Fourth Proportional to 29,161.20, 43,752.60 and 11,643.60

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Solution

The fourth proportional to 29,161.20, 43,752.60 and 11,643.60 is: 17,469.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,161.20 : 43,752.60 = 11,643.60 : x
  2. Step 2: Convert to fraction form
    29,161.20/43,752.60 = 11,643.60/x
  3. Step 3: Cross multiply
    29,161.20x = 43,752.60 × 11,643.60
  4. Step 4: Simplify right side
    29,161.20x = 509,437,773.36
  5. Step 5: Solve for x
    x = 509,437,773.36/29,161.20
  6. Step 6: Final answer
    x = 17,469.71

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1.5x scale

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.