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Finding the Fourth Proportional to 2,416.81, 3,625.44 and 772.96

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Solution

The fourth proportional to 2,416.81, 3,625.44 and 772.96 is: 1,159.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,416.81 : 3,625.44 = 772.96 : x
  2. Step 2: Convert to fraction form
    2,416.81/3,625.44 = 772.96/x
  3. Step 3: Cross multiply
    2,416.81x = 3,625.44 × 772.96
  4. Step 4: Simplify right side
    2,416.81x = 2,802,320.10
  5. Step 5: Solve for x
    x = 2,802,320.10/2,416.81
  6. Step 6: Final answer
    x = 1,159.51

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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.