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Finding the Fourth Proportional to 11,352.75, 15,668.10 and 6,636.75

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Solution

The fourth proportional to 11,352.75, 15,668.10 and 6,636.75 is: 9,159.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,352.75 : 15,668.10 = 6,636.75 : x
  2. Step 2: Convert to fraction form
    11,352.75/15,668.10 = 6,636.75/x
  3. Step 3: Cross multiply
    11,352.75x = 15,668.10 × 6,636.75
  4. Step 4: Simplify right side
    11,352.75x = 103,985,262.68
  5. Step 5: Solve for x
    x = 103,985,262.68/11,352.75
  6. Step 6: Final answer
    x = 9,159.48

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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.