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Finding the Fourth Proportional to 3,368.93, 5,055 and 1,520.62

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Solution

The fourth proportional to 3,368.93, 5,055 and 1,520.62 is: 2,281.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,368.93 : 5,055 = 1,520.62 : x
  2. Step 2: Convert to fraction form
    3,368.93/5,055 = 1,520.62/x
  3. Step 3: Cross multiply
    3,368.93x = 5,055 × 1,520.62
  4. Step 4: Simplify right side
    3,368.93x = 7,686,721.46
  5. Step 5: Solve for x
    x = 7,686,721.46/3,368.93
  6. Step 6: Final answer
    x = 2,281.65

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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.