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Finding the Fourth Proportional to 18,625.47, 25,702.90 and 13,866.67

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Solution

The fourth proportional to 18,625.47, 25,702.90 and 13,866.67 is: 19,135.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,625.47 : 25,702.90 = 13,866.67 : x
  2. Step 2: Convert to fraction form
    18,625.47/25,702.90 = 13,866.67/x
  3. Step 3: Cross multiply
    18,625.47x = 25,702.90 × 13,866.67
  4. Step 4: Simplify right side
    18,625.47x = 356,413,632.34
  5. Step 5: Solve for x
    x = 356,413,632.34/18,625.47
  6. Step 6: Final answer
    x = 19,135.82

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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.