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Finding the Fourth Proportional to 25,251.60, 34,845.65 and 13,920.51

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Solution

The fourth proportional to 25,251.60, 34,845.65 and 13,920.51 is: 19,209.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,251.60 : 34,845.65 = 13,920.51 : x
  2. Step 2: Convert to fraction form
    25,251.60/34,845.65 = 13,920.51/x
  3. Step 3: Cross multiply
    25,251.60x = 34,845.65 × 13,920.51
  4. Step 4: Simplify right side
    25,251.60x = 485,069,149.68
  5. Step 5: Solve for x
    x = 485,069,149.68/25,251.60
  6. Step 6: Final answer
    x = 19,209.44

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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.