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Finding the Fourth Proportional to 18,579.61, 25,638.17 and 11,024.64

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Solution

The fourth proportional to 18,579.61, 25,638.17 and 11,024.64 is: 15,213.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,579.61 : 25,638.17 = 11,024.64 : x
  2. Step 2: Convert to fraction form
    18,579.61/25,638.17 = 11,024.64/x
  3. Step 3: Cross multiply
    18,579.61x = 25,638.17 × 11,024.64
  4. Step 4: Simplify right side
    18,579.61x = 282,651,601.40
  5. Step 5: Solve for x
    x = 282,651,601.40/18,579.61
  6. Step 6: Final answer
    x = 15,213.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.