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Finding the Fourth Proportional to 4,878.79, 7,321.82 and 3,032.60

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Solution

The fourth proportional to 4,878.79, 7,321.82 and 3,032.60 is: 4,551.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.79 : 7,321.82 = 3,032.60 : x
  2. Step 2: Convert to fraction form
    4,878.79/7,321.82 = 3,032.60/x
  3. Step 3: Cross multiply
    4,878.79x = 7,321.82 × 3,032.60
  4. Step 4: Simplify right side
    4,878.79x = 22,204,099.56
  5. Step 5: Solve for x
    x = 22,204,099.56/4,878.79
  6. Step 6: Final answer
    x = 4,551.15

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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.