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Finding the Fourth Proportional to 2,278.86, 3,420.45 and 1,414.86

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Solution

The fourth proportional to 2,278.86, 3,420.45 and 1,414.86 is: 2,123.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.86 : 3,420.45 = 1,414.86 : x
  2. Step 2: Convert to fraction form
    2,278.86/3,420.45 = 1,414.86/x
  3. Step 3: Cross multiply
    2,278.86x = 3,420.45 × 1,414.86
  4. Step 4: Simplify right side
    2,278.86x = 4,839,457.89
  5. Step 5: Solve for x
    x = 4,839,457.89/2,278.86
  6. Step 6: Final answer
    x = 2,123.63

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.