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Finding the Fourth Proportional to 17,212.85, 23,751.78 and 9,657.61

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Solution

The fourth proportional to 17,212.85, 23,751.78 and 9,657.61 is: 13,326.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,212.85 : 23,751.78 = 9,657.61 : x
  2. Step 2: Convert to fraction form
    17,212.85/23,751.78 = 9,657.61/x
  3. Step 3: Cross multiply
    17,212.85x = 23,751.78 × 9,657.61
  4. Step 4: Simplify right side
    17,212.85x = 229,385,309.29
  5. Step 5: Solve for x
    x = 229,385,309.29/17,212.85
  6. Step 6: Final answer
    x = 13,326.40

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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.