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Finding the Fourth Proportional to 15,696.54, 21,661.17 and 8,526.51

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Solution

The fourth proportional to 15,696.54, 21,661.17 and 8,526.51 is: 11,766.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,696.54 : 21,661.17 = 8,526.51 : x
  2. Step 2: Convert to fraction form
    15,696.54/21,661.17 = 8,526.51/x
  3. Step 3: Cross multiply
    15,696.54x = 21,661.17 × 8,526.51
  4. Step 4: Simplify right side
    15,696.54x = 184,694,182.62
  5. Step 5: Solve for x
    x = 184,694,182.62/15,696.54
  6. Step 6: Final answer
    x = 11,766.55

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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.