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Finding the Fourth Proportional to 2,416.50, 3,624.89 and 685.26

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Solution

The fourth proportional to 2,416.50, 3,624.89 and 685.26 is: 1,027.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,416.50 : 3,624.89 = 685.26 : x
  2. Step 2: Convert to fraction form
    2,416.50/3,624.89 = 685.26/x
  3. Step 3: Cross multiply
    2,416.50x = 3,624.89 × 685.26
  4. Step 4: Simplify right side
    2,416.50x = 2,483,988.70
  5. Step 5: Solve for x
    x = 2,483,988.70/2,416.50
  6. Step 6: Final answer
    x = 1,027.93

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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.