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Finding the Fourth Proportional to 18,603.30, 25,669.82 and 10,644.02

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Solution

The fourth proportional to 18,603.30, 25,669.82 and 10,644.02 is: 14,687.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.30 : 25,669.82 = 10,644.02 : x
  2. Step 2: Convert to fraction form
    18,603.30/25,669.82 = 10,644.02/x
  3. Step 3: Cross multiply
    18,603.30x = 25,669.82 × 10,644.02
  4. Step 4: Simplify right side
    18,603.30x = 273,230,077.48
  5. Step 5: Solve for x
    x = 273,230,077.48/18,603.30
  6. Step 6: Final answer
    x = 14,687.18

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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.