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Finding the Fourth Proportional to 25,390.89, 35,039.40 and 14,212.89

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Solution

The fourth proportional to 25,390.89, 35,039.40 and 14,212.89 is: 19,613.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,390.89 : 35,039.40 = 14,212.89 : x
  2. Step 2: Convert to fraction form
    25,390.89/35,039.40 = 14,212.89/x
  3. Step 3: Cross multiply
    25,390.89x = 35,039.40 × 14,212.89
  4. Step 4: Simplify right side
    25,390.89x = 498,011,137.87
  5. Step 5: Solve for x
    x = 498,011,137.87/25,390.89
  6. Step 6: Final answer
    x = 19,613.77

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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.