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Finding the Fourth Proportional to 4,893.95, 7,324.45 and 4,489.31

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Solution

The fourth proportional to 4,893.95, 7,324.45 and 4,489.31 is: 6,718.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,893.95 : 7,324.45 = 4,489.31 : x
  2. Step 2: Convert to fraction form
    4,893.95/7,324.45 = 4,489.31/x
  3. Step 3: Cross multiply
    4,893.95x = 7,324.45 × 4,489.31
  4. Step 4: Simplify right side
    4,893.95x = 32,881,726.63
  5. Step 5: Solve for x
    x = 32,881,726.63/4,893.95
  6. Step 6: Final answer
    x = 6,718.85

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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.