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Finding the Fourth Proportional to 18,513.59, 25,548.71 and 10,130.09

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Solution

The fourth proportional to 18,513.59, 25,548.71 and 10,130.09 is: 13,979.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,513.59 : 25,548.71 = 10,130.09 : x
  2. Step 2: Convert to fraction form
    18,513.59/25,548.71 = 10,130.09/x
  3. Step 3: Cross multiply
    18,513.59x = 25,548.71 × 10,130.09
  4. Step 4: Simplify right side
    18,513.59x = 258,810,553.29
  5. Step 5: Solve for x
    x = 258,810,553.29/18,513.59
  6. Step 6: Final answer
    x = 13,979.49

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