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Finding the Fourth Proportional to 3,056.67, 4,584.20 and 865.53

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Solution

The fourth proportional to 3,056.67, 4,584.20 and 865.53 is: 1,298.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,056.67 : 4,584.20 = 865.53 : x
  2. Step 2: Convert to fraction form
    3,056.67/4,584.20 = 865.53/x
  3. Step 3: Cross multiply
    3,056.67x = 4,584.20 × 865.53
  4. Step 4: Simplify right side
    3,056.67x = 3,967,758.30
  5. Step 5: Solve for x
    x = 3,967,758.30/3,056.67
  6. Step 6: Final answer
    x = 1,298.07

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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.