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Finding the Fourth Proportional to 4,993.84, 7,490.70 and 3,899.11

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Solution

The fourth proportional to 4,993.84, 7,490.70 and 3,899.11 is: 5,848.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,993.84 : 7,490.70 = 3,899.11 : x
  2. Step 2: Convert to fraction form
    4,993.84/7,490.70 = 3,899.11/x
  3. Step 3: Cross multiply
    4,993.84x = 7,490.70 × 3,899.11
  4. Step 4: Simplify right side
    4,993.84x = 29,207,063.28
  5. Step 5: Solve for x
    x = 29,207,063.28/4,993.84
  6. Step 6: Final answer
    x = 5,848.62

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1.5x scale

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.