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Finding the Fourth Proportional to 21,696.39, 32,455.49 and 17,322.39

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Solution

The fourth proportional to 21,696.39, 32,455.49 and 17,322.39 is: 25,912.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,696.39 : 32,455.49 = 17,322.39 : x
  2. Step 2: Convert to fraction form
    21,696.39/32,455.49 = 17,322.39/x
  3. Step 3: Cross multiply
    21,696.39x = 32,455.49 × 17,322.39
  4. Step 4: Simplify right side
    21,696.39x = 562,206,568.81
  5. Step 5: Solve for x
    x = 562,206,568.81/21,696.39
  6. Step 6: Final answer
    x = 25,912.45

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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.