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Finding the Fourth Proportional to 3,392.65, 5,091 and 1,203.22

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Solution

The fourth proportional to 3,392.65, 5,091 and 1,203.22 is: 1,805.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,392.65 : 5,091 = 1,203.22 : x
  2. Step 2: Convert to fraction form
    3,392.65/5,091 = 1,203.22/x
  3. Step 3: Cross multiply
    3,392.65x = 5,091 × 1,203.22
  4. Step 4: Simplify right side
    3,392.65x = 6,125,593.02
  5. Step 5: Solve for x
    x = 6,125,593.02/3,392.65
  6. Step 6: Final answer
    x = 1,805.55

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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.