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Finding the Fourth Proportional to 1,992.16, 2,975.20 and 1,696.51

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Solution

The fourth proportional to 1,992.16, 2,975.20 and 1,696.51 is: 2,533.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.16 : 2,975.20 = 1,696.51 : x
  2. Step 2: Convert to fraction form
    1,992.16/2,975.20 = 1,696.51/x
  3. Step 3: Cross multiply
    1,992.16x = 2,975.20 × 1,696.51
  4. Step 4: Simplify right side
    1,992.16x = 5,047,456.03
  5. Step 5: Solve for x
    x = 5,047,456.03/1,992.16
  6. Step 6: Final answer
    x = 2,533.66

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.