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Finding the Fourth Proportional to 3,368.49, 5,048.93 and 1,721.55

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Solution

The fourth proportional to 3,368.49, 5,048.93 and 1,721.55 is: 2,580.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,368.49 : 5,048.93 = 1,721.55 : x
  2. Step 2: Convert to fraction form
    3,368.49/5,048.93 = 1,721.55/x
  3. Step 3: Cross multiply
    3,368.49x = 5,048.93 × 1,721.55
  4. Step 4: Simplify right side
    3,368.49x = 8,692,008.68
  5. Step 5: Solve for x
    x = 8,692,008.68/3,368.49
  6. Step 6: Final answer
    x = 2,580.39

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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.