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Finding the Fourth Proportional to 7,046.49, 9,724.13 and 3,902.68

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Solution

The fourth proportional to 7,046.49, 9,724.13 and 3,902.68 is: 5,385.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,046.49 : 9,724.13 = 3,902.68 : x
  2. Step 2: Convert to fraction form
    7,046.49/9,724.13 = 3,902.68/x
  3. Step 3: Cross multiply
    7,046.49x = 9,724.13 × 3,902.68
  4. Step 4: Simplify right side
    7,046.49x = 37,950,119.05
  5. Step 5: Solve for x
    x = 37,950,119.05/7,046.49
  6. Step 6: Final answer
    x = 5,385.68

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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.