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Finding the Fourth Proportional to 17,709.65, 24,439.86 and 9,643.85

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Solution

The fourth proportional to 17,709.65, 24,439.86 and 9,643.85 is: 13,308.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,709.65 : 24,439.86 = 9,643.85 : x
  2. Step 2: Convert to fraction form
    17,709.65/24,439.86 = 9,643.85/x
  3. Step 3: Cross multiply
    17,709.65x = 24,439.86 × 9,643.85
  4. Step 4: Simplify right side
    17,709.65x = 235,694,221.66
  5. Step 5: Solve for x
    x = 235,694,221.66/17,709.65
  6. Step 6: Final answer
    x = 13,308.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.