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Finding the Fourth Proportional to 25,478.56, 38,195.04 and 9,892.48

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Solution

The fourth proportional to 25,478.56, 38,195.04 and 9,892.48 is: 14,829.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,478.56 : 38,195.04 = 9,892.48 : x
  2. Step 2: Convert to fraction form
    25,478.56/38,195.04 = 9,892.48/x
  3. Step 3: Cross multiply
    25,478.56x = 38,195.04 × 9,892.48
  4. Step 4: Simplify right side
    25,478.56x = 377,843,669.30
  5. Step 5: Solve for x
    x = 377,843,669.30/25,478.56
  6. Step 6: Final answer
    x = 14,829.87

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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.