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Finding the Fourth Proportional to 11,172.52, 15,416.92 and 6,696.16

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Solution

The fourth proportional to 11,172.52, 15,416.92 and 6,696.16 is: 9,240.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,172.52 : 15,416.92 = 6,696.16 : x
  2. Step 2: Convert to fraction form
    11,172.52/15,416.92 = 6,696.16/x
  3. Step 3: Cross multiply
    11,172.52x = 15,416.92 × 6,696.16
  4. Step 4: Simplify right side
    11,172.52x = 103,234,163.03
  5. Step 5: Solve for x
    x = 103,234,163.03/11,172.52
  6. Step 6: Final answer
    x = 9,240.01

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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.