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Finding the Fourth Proportional to 18,425.62, 25,427.85 and 10,042.66

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Solution

The fourth proportional to 18,425.62, 25,427.85 and 10,042.66 is: 13,859.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,425.62 : 25,427.85 = 10,042.66 : x
  2. Step 2: Convert to fraction form
    18,425.62/25,427.85 = 10,042.66/x
  3. Step 3: Cross multiply
    18,425.62x = 25,427.85 × 10,042.66
  4. Step 4: Simplify right side
    18,425.62x = 255,363,252.08
  5. Step 5: Solve for x
    x = 255,363,252.08/18,425.62
  6. Step 6: Final answer
    x = 13,859.14

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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.