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Finding the Fourth Proportional to 4,788.74, 7,185.90 and 2,015.22

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Solution

The fourth proportional to 4,788.74, 7,185.90 and 2,015.22 is: 3,024.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,788.74 : 7,185.90 = 2,015.22 : x
  2. Step 2: Convert to fraction form
    4,788.74/7,185.90 = 2,015.22/x
  3. Step 3: Cross multiply
    4,788.74x = 7,185.90 × 2,015.22
  4. Step 4: Simplify right side
    4,788.74x = 14,481,169.40
  5. Step 5: Solve for x
    x = 14,481,169.40/4,788.74
  6. Step 6: Final answer
    x = 3,024.00

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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.